You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Compared to Earth, the Moon is  
 (A) drier. (B) larger. (C) heavier. (D) brighter.
A

Prolonged exercise stimulates muscle cells to absorb sugar from the blood. This mechanism reduces stress placed on the body by signaling the body to produce  
 (A) insulin. (B) lipids. (C) hemoglobin. (D) hydrochloric acid.
A

A student measures the growth of a group of plants given different amounts of fertilizer. Which data display should the student use to compare the growth of the plants?  
 (A) bar graph (B) scatterplot (C) line graph (D) pie chart

C