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: extreme heat and pressure change rock into metamorphic rock, Fact2: Slate is a metamorphic rock., Question: What rock is formed by extreme heat and pressure (A) erosion (B) crust (C) calcite (D) Slate (E) dead (F) forces (G) fibrous (H) complex
D

Fact1: a refrigerator is used for keeping food fresh for a long period of time, Fact2: Cold temperatures keep food fresh and inhibit the growth of most bacteria., Question: A refrigerator is used for inhibiting the growth of what on food? (A) some invertebrates (B) viruses (C) molds (D) spores (E) Echinoids (F) most bacteria (G) Nematoda (H) cones
F

Fact1: an organism requires energy for growth, Fact2: Different organisms have different growth requirements and growth rates., Question: What is a requirement whose amount varies between organisms? (A) food (B) energy (C) existence (D) entropy (E) sunlight (F) H20 (G) entity (H) Energy.
B