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: For radio transmissions, longer wavelength waves have 
 Option1: higher or 
 Option2: lower frequencies. 
 Explanation: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

SOLUTION: lower frequencies.

PROBLEM: Question: Reed saw a cell through a microscope. He sees a cell has less visible mitochondria than the rest. This cell likely is _____ active compared to the others. 
 Option1: more 
 Option2: less 
 Explanation: Cells that are very active would typically have more mitochondria than cells that are less active.

SOLUTION: less

PROBLEM: Question: Katie is rolling balls on the grass. One is large and heavy, the other is light and small. The ball that is smaller will have friction that is 
 Option1: greater 
 Option2: lesser 
 Explanation: Heavier objects also have more friction because they press together with greater force.

SOLUTION:
lesser