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").

[EX Q]: Fact1: Most mollusks have shells., Fact2: All mollusks have soft bodies., Question: What can shells protect? (A) fronts (B) animals (C) soft bodies (D) coastlines (E) fur (F) blood (G) critical organs (H) hard bodies
[EX A]: C

[EX Q]: Fact1: plant requires seed dispersal for reproduction, Fact2: Reproductive investment was measured as seed mass, samara size, and dispersal ability., Question: What requires investment, seed mass, size and dispersal? (A) plants (B) Species (C) animals (D) coral (E) Oak (F) gene flow (G) Frogs (H) mussels
[EX A]: A

[EX Q]: Fact1: Chemical bonds form when substances react with one another., Fact2: Chemical bonds vibrate., Question: what does substances reacting with one another cause? (A) density (B) forces (C) vibration (D) death (E) illness (F) earthquakes (G) Leptospirosis (H) volume
[EX A]:
C