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").

Q: Fact1: Molecules of tRNA bring amino acids to the ribosome in the correct sequence., Fact2: Ribosomes are sites of protein synthesis., Question: Molecules of _ initiate protein synthesis (A) Acids (B) nektar (C) sugar (D) tRNA (E) H 2 O (F) three (G) CO 2 (H) HIV

A: D
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Q: 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

A: H
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Q: Fact1: faulting of rock in Earth 's crust causes earthquakes, Fact2: Earthquakes and tremors are common in Yellowstone., Question: Faulting of rock in Earth 's crust causes what? (A) friction (B) conversion (C) mitosis (D) loose soil (E) tremors (F) Movement (G) crust (H) waves

A:
E
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