Detailed Instructions: 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: Endocrine hormones travel throughout the body in the blood., Fact2: Breathing affects the flow of hormones through the endocrine system., Question: What process helps hormones travel throughout the body in the bloodstream? (A) hydration (B) mitosis (C) sleeping (D) sweating (E) oxygen (F) allow growth (G) eating (H) breathing
A:
H