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: staying warm has a positive impact on an animal 's survival, Fact2: With a thick fur coat and 4 inches of fat a bear stays warm., Question: What has a positive impact on an animal's survival? (A) four limbs (B) sensory neurons (C) low water availability (D) fur and fat (E) loss of food (F) heat energy (G) hormones (H) destruction of habitat
[EX A]: D

[EX Q]: Fact1: Protozoa can be classified on the basis of how they move., Fact2: Paramecium are protozoa, single celled animals., Question: What is a way to categorize paramecium?  (A) the smell (B) coliform (C) the taste (D) canis lupus (E) how they move (F) the length (G) skin color (H) coelenterates
[EX A]: E

[EX Q]: Fact1: Ejaculation occurs when muscle contractions propel sperm from the epididymes., Fact2: For men, orgasm generally climaxes in the ejaculation of semen, which contains millions of sperm., Question: For men, orgasm occurs when climax causes muscles to contract and release what? (A) energy (B) movement (C) nerves (D) forces (E) Energy. (F) oxygen (G) frustration (H) ejaculate
[EX A]:
H