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

## Step 1<br />Ascaris lumbricoides is a type of parasitic worm that infects the intestines of humans. It is a member of the phylum Nematoda, which is commonly referred to as nematodes or roundworms.<br />## Step 2<br />Arthropods are a different group of organisms that include insects, spiders, and crustaceans. They are not the same as Ascaris lumbricoides.<br />## Step 3<br />Fungi are a separate kingdom of organisms that include yeasts, molds, and mushrooms. They are not the same as Ascaris lumbricoides.<br />## Step 4<br />Protozoa are single-celled eukaryotic organisms. They are not the same as Ascaris lumbricoides.<br />## Step 5<br />Given the above information, the correct answer is A. Nematode.