Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: Most hormones are regulated by feedback mechanisms., Fact2: Hormones act as chemical messengers., Question: what are regulated by feedback mechanisms? (A) trucks and cars (B) h2o intake (C) chemical messengers (D) some prokaryotes (E) antigens that cause allergy (F) skin cells (G) density (H) prokaryotic cells
Student:
C