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: Invertebrates are animals that lack a vertebral column, or backbone., Fact2: Insects are the most common invertebrates., Question: What do insects lack? (A) sensory neurons (B) the body's largest organ (C) a vertebral column (D) wings (E) legs (F) Chlorophyll (G) a cuticle (H) reproductive system
Solution:
C