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.

[Q]: Question: In ancient times, there was worse medicine. This means there was a _____ death rate. 
 Option1: lower 
 Option2: higher 
 Explanation: More recently, the death rate has fallen because of the availability of more food and medical advances.
[A]: higher


[Q]: Question: Increasing the mass of an object causes its inertia to 
 Option1: increase 
 Option2: decrease 
 Explanation: The full box is harder to move because it has greater mass and therefore greater inertia.
[A]: increase


[Q]: Question: A larger boulder will roll down a hill _____ than a smaller one. 
 Option1: faster 
 Option2: slower 
 Explanation: An object has greater momentum if it has greater mass, greater velocity, or both.
[A]:
faster