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

## Step 1<br />Ascaris lumbricoides is a type of parasitic worm that infects the intestines of humans. It is a multicellular organism, which means it is not a single-celled organism like protozoa.<br />## Step 2<br />Ascaris lumbricoides is a type of nematode, also known as a roundworm. It is not a fungus, which is a different type of organism that reproduces by spores and has a cell wall.<br />## Step 3<br />Ascaris lumbricoides is not an arthropod, which is a type of invertebrate animal that has an exoskeleton, a segmented body, and paired jointed appendages.