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").

[Q]: Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells
[A]: F


[Q]: Fact1: an earthquake causes the ground to shake, Fact2: Seismic waves are produced by earthquakes., Question: Seismic waves cause what to shake? (A) earth (B) body water (C) wind (D) tremors (E) sunlight (F) the ground (G) Sediment (H) rocks
[A]: F


[Q]: Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: An allergy is a reaction to a substance the body recognizes as foreign., Question: An allergy can be caused by (A) antigens (B) Pesticides (C) cold weather (D) fever (E) viruses (F) food (G) Smoking (H) germs
[A]:
A