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: smoking tobacco decreases stamina, Fact2: Manual dexterity and physical stamina are vital., Question: What decreases manual dexterity? (A) Dehydration (B) lifting weights (C) hypothyroidism (D) prolonged thirst (E) working out (F) eating healthy (G) smoking tobacco (H) Abnormal cell growth
[EX A]: G

[EX Q]: Fact1: Biodiversity increases the productivity and stability of ecosystems., Fact2: An ecosystem includes the organisms and their habitat., Question: what does biodiversity increase the productivity and stability of? (A) density (B) the looseness of soil (C) water vapor (D) the environment (E) h2o (F) swamp vegetation (G) biological diversity (H) organisms and their habitat
[EX A]: H

[EX Q]: Fact1: Lung cancer is most often caused by exposure to tobacco smoke., Fact2: Tobacco includes cigarettes, cigars, chewing tobacco, and more., Question: What kind of cancer does exposure to cigarettes and cigars often cause? (A) lung (B) UV (C) foot (D) damage (E) skin (F) death (G) breast (H) harm
[EX A]:
A