TASK DEFINITION: You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.
PROBLEM: Question: John was watching objects fall from the sky in the simulator. He observed that items with more mass will be pulled by gravity at a rate that is 
 Option1: Stronger 
 Option2: Weaker 
 Explanation: Gravity is a pull which all matter exerts on all other matter, the more mass, the stronger the pull.

SOLUTION: Stronger

PROBLEM: Question: A large object will have _____ momentum than a small object. 
 Option1: more 
 Option2: less 
 Explanation: The more mass a moving object has or the faster its moving, the greater its momentum.

SOLUTION: more

PROBLEM: Question: The blood vessels near the top of the skin do what when it's warm? 
 Option1: enlarge 
 Option2: contract 
 Explanation: When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.

SOLUTION:
enlarge