TASK DEFINITION: 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.
PROBLEM: Sal is looking at a map of Massachusetts. He has measured the distance, in inches, from Boston to Salem on the map. He wants to know how many actual miles the inches represent. What feature of the map should he look for?  
 (A) key (B) scale (C) legend (D) compass

SOLUTION: B

PROBLEM: Which of the following helps the body to cool down?  
 (A) shivering (B) sweating (C) running a fever (D) taking deep breaths

SOLUTION: B

PROBLEM: Scientists determined that specific agents produce specific diseases, and many are transmitted by sneezing. What must the droplets contain for a disease to be transmitted by sneezing?  
 (A) the disease-causing particles (B) cells exposed to the disease (C) toxins released by diseased cells (D) disease-specific antibodies

SOLUTION:
A