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.

Question: A family that is very small, compared to one that is enormous, will have allele differences that are 
 Option1: smaller 
 Option2: greater 
 Explanation: The smaller a population is, the more allele frequencies may drift.
smaller

Question: Yolanda moved to Denver where it is 5000 feet above sea level. The atmosphere here is considered 
 Option1: dense 
 Option2: thin 
 Explanation: The density of the atmosphere decreases with an increase in the height above sea level (altitude).
thin

Question: Two cars are going down the road, one weighs a ton, the other weighs two tons. If both crash, the car weighing one ton will have a momentum that is 
 Option1: smaller 
 Option2: larger 
 Explanation: The more mass a moving object has or the faster its moving, the greater its momentum.

smaller