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: natural disasters can cause animals to leave an environment, Fact2: Animal migration is mystery of nature., Question: Natural disasters can cause  (A) deforestation (B) kill them (C) Pollution (D) disease (E) deadly (F) erosion (G) migration (H) flooding
answer:
G


question:
Fact1: Echinoderms lack a centralized nervous system., Fact2: Sand dollars and sea biscuits are also echinoderms., Question: What lacks a centralized nervous system? (A) Damaged hearing (B) Humans (C) Horses (D) Sand dollars (E) insects (F) Chickens (G) Pesticides (H) barnacles
answer:
D


question:
Fact1: erosion can cause a landslide, Fact2: Landslides indicate unstable terrain., Question: what can erosion cause? (A) hurricanes (B) h2o (C) Pollution (D) slow and inefficient (E) unstable terrain (F) Physical weathering (G) flooding (H) hydrogen
answer:

E