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

The correct answer is B. Nematode.<br /><br />Ascaris lumbricoides is a parasitic nematode, commonly known as the roundworm. It is a type of worm that infects the intestines of humans and other animals. Nematodes are a diverse group of invertebrate animals characterized by their elongated, cylindrical bodies and lack of segmentation. They are found in various environments, including soil, water, and as parasites within plants, animals, and humans. Ascaris lumbricoides is one of the most common intestinal parasites affecting humans worldwide.