Ascaris lumbricoides is a __ A. Arthropod B. Nematod C. Protozoa D. Fungi

## Step 1<br />Ascaris lumbricoides is a type of parasitic worm that infects the intestines of humans. It is not an arthropod, which is a group that includes insects, spiders, and crustaceans. <br />## Step 2<br />Ascaris lumbricoides is also not a protozoa, which are single-celled eukaryotic organisms. <br />## Step 3<br />Lastly, it is not a fungus, which is a group of organisms that includes yeasts and molds. <br />## Step 4<br />Ascaris lumbricoides is a type of nematode, which is a group of roundworms. This makes option B the correct answer.