instruction:
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").
question:
Fact1: Bone provides protection for soft tissues and internal organs., Fact2: Bone matrix consists of collagen and minerals., Question: What provides protection for soft tissues and internal organs? (A) Blankets (B) barnacles (C) Epidermis (D) mammals (E) Collegen (F) Animal fur (G) a cuticle (H) fur and fat
answer:
E

question:
Fact1: wind and rain cause erosion, Fact2: Water, in the form of rain, is the most effective agent of erosion., Question: What causes erosion the most? (A) streams (B) motion (C) LEDs (D) water (E) Roads (F) rivers (G) Winter (H) wind
answer:
D

question:
Fact1: Most invertebrates have a nervous system., Fact2: Insects are the most common invertebrates., Question: What has a nervous system? (A) animals (B) tortoises (C) crocodiles (D) sponges (E) elephants (F) placozoans (G) mesozoans (H) insects
answer:
H