Detailed Instructions: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Problem:Fact1: Collar cells have tiny hairs that trap the particles., Fact2: Collar cells or choanocytes are the work horses., Question: What do choanocytes have to trap the particles? (A) several genes (B) a large mouth (C) a hosta (D) a set of teeth (E) antibodies (F) melanin content (G) tiny hairs (H) Protein
Solution:
G