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Researchers studying magnetosensation have determined why some soil-dwelling roundworms in the Southern Hemisphere move in the opposite direction of Earth's magnetic field when searching for __ in the Northern Hemisphere, the magnetic field points down, into the ground, but in the Southern Hemisphere, it points up, toward the surface and away from worms' food sources. Which choice completes the text so that it conforms to the conventions of Standard English? A. food: B. food, C. food while D. food
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# Explanation:## Step 1The sentence is discussing the movement of soil-dwelling roundworms in relation to Earth's magnetic field. The sentence is structured in a way that it is discussing the movement of the worms in the Northern Hemisphere and then contrasts it with their movement in the Southern Hemisphere.## Step 2The sentence is discussing the worms' movement in the Northern Hemisphere, where the magnetic field points down, into the ground. This is a contrast to the Southern Hemisphere, where the magnetic field points up, toward the surface.## Step 3The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 4The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 5The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 6The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 7The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 8The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 9The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 10The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 11The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 12The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 13The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 14The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 15The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 16The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 17The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 18The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 19The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 20The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is a contrast to the Northern Hemisphere, where the magnetic field points down, into the ground.## Step 21The sentence is discussing the worms' movement in the Southern Hemisphere, where the magnetic field points up, toward the surface. This is