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: Rich was examining a cliff face. Which part of the cliff is younger, geologically speaking? 
 Option1: the base 
 Option2: the top 
 Explanation: The upper rock layers are much younger.

SOLUTION: the top

PROBLEM: Question: Eric builds a 60ft telescope. Will builds a 10ft telescope. Whose telescope gathers less light? 
 Option1: Eric 
 Option2: Will 
 Explanation: The larger the light collecting area, the more light a telescope gathers and the higher resolution (ability to see fine detail) it has.

SOLUTION: Will

PROBLEM: Question: Fred found a longitudinal wave. The particles are getting closer together. The amplitude is 
 Option1: increasing 
 Option2: decreasing 
 Explanation: The closer together the particles in a longitudinal wave are, the greater the amplitude.

SOLUTION:
increasing