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").

Fact1: knowledge of the stars can be used to navigate, Fact2: Of course, astronomers also study stars., Question: What can be used to navigate? (A) music (B) backbones (C) astrology (D) cilia (E) magic (F) sponges (G) astronomy (H) lamphreys
G

Fact1: Populations of viruses do not grow through cell division because they are not cells., Fact2: Prokaryotes multiply by simple cell division, forming clones or exact copies of themselves., Question: What are viruses not? (A) self-copies (B) an object (C) HIV (D) humans (E) infectious (F) homogenous (G) dangerous (H) prokaryotes
H

Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Deserts are formed because of lack of water., Question: Where can not survive in a desert? (A) single-celled organisms (B) Movement of an air mass (C) an aquatic animal (D) insects (E) one celled organisms (F) plants (G) tectonic plates coliding (H) lizards
C