- A Nematoda
- B Annelida
- C Arthropoda
- D Mollusca
Correct answer: B. Annelida
Explanation: Earthworm belongs to phylum Annelida, characterized by true segmentation (metamerism) and a true coelom.
Concept context
Phylum-level classification of the animal kingdom from Porifera to Chordata, based on body symmetry, coelom, and segmentation. One of the most example-heavy chapters for NEET.