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").
--------
Question: 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

Answer: E


Question: Fact1: threatening behavior by predators causes a porcupine to extend its quills, Fact2: Puffers are smooth skinned while Porcupines have the characteristic spines or quills., Question: What does a porcupine do with its spines when it's threatened? (A) killing insects (B) Shoot them (C) kill them (D) protect them (E) Extend them (F) Shed them (G) Retract them (H) behave

Answer: E


Question: Fact1: natural disasters can cause animals to leave an environment, Fact2: Environments are animals homes., Question: What can cause animals to leave their homes? (A) Pesticides (B) natural disasters (C) animal sanctuaries (D) deforestation (E) influenza (F) Electrical energy (G) wildlife protections (H) creating dens

Answer:
B