instruction:
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:
Question: Harry is 6 feet away from you and Sara is 15 feet away. Who will appear to move further away if they both take one step? 
 Option1: Harry 
 Option2: Sara 
 Explanation: The closer your finger is to your eyes, the greater the position changes because of parallax.
answer:
Harry


question:
Question: A increase in the size of a telescope results in a/an _____ in ability to collect light. 
 Option1: increase 
 Option2: decrease 
 Explanation: Larger telescopes can collect more light.
answer:
increase


question:
Question: When Dave screams outside he notices that the sound travels at different speeds in different temperatures. The sound travels faster when it is 
 Option1: cold. 
 Option2: hot 
 Explanation: For a given medium, sound has a slower speed at lower temperatures.
answer:

hot