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: A moving ball that is only lightly resisted by fluid friction is likely to be quite 
 Option1: small 
 Option2: large 
 Explanation: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

SOLUTION: small

PROBLEM: Question: If current increases, that means resistance is 
 Option1: increasing 
 Option2: decreasing 
 Explanation: When we add resistors in parallel to each other the total resistance decreases and the current increases.

SOLUTION: decreasing

PROBLEM: Question: African Americans have darker skin than other Americans. Researchers were not surprised to discover therefore, that vitamin D insufficiency among African Americans is _____ than among other Americans? 
 Option1: more prevalent 
 Option2: less prevalent 
 Explanation: Pigments in the skin act like a filter that can prevent the skin from making vitamin D. As a result, people with darker skin need more time in the sun than people with lighter skin to make the same amount of vitamin D.

SOLUTION:
more prevalent