You will be given a definition of a task first, then some input of the task.
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: an animal requires air for survival, Fact2: It is breathed in by animals and restored to the air by the photosynthesis mechanism of plants., Question: Animals rely on what for survival? (A) proteins (B) glycogen (C) rocks (D) sunlight (E) stars (F) weeds (G) cellulose (H) plants
Output:
H