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: 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: Evolution is a change in the characteristics of living things over time., Fact2: Trees are the largest of living things., Question: Evolution changes the characteristics of what over time? (A) the Moon (B) Man (C) life (D) trees (E) rocks (F) the Sun (G) humans (H) plants
D

Fact1: Adult echinoderms have radial symmetry., Fact2: Modern echinoderms include starfish and sea urchins., Question: What has radial symmetry? (A) sea urchins (B) A Greek letter (C) humans (D) Most plants (E) peachleaf willow (F) catfish (G) gastropod shells (H) ducks

A