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: a mold spore has a negative impact on the respiratory system, Fact2: Insects also have both a heart and a respiratory, or breathing, system., Question: Mold spores have what impact on breathing? (A) neutral (B) ambiguous (C) symptoms (D) motility (E) positive (F) dangerous (G) negative (H) uncontrolled
[EX A]: G

[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: fossils are formed when layers of sediment cover the remains of organisms over time, Fact2: Fossil fuels are formed from the remains of once living organisms that depended on light., Question: Fossils are formed when remains of living things are what? (A) buried in mud (B) break off (C) covered over time (D) Physical weathering (E) By coral exoskeletons (F) It remains dormant (G) saved in a box (H) kept in the dark
[EX A]:
C