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.

[Q]: Question: Sandra sees a tiny glacier, and notes that it has smaller tributary glaciers flowing into it, in valleys that are 
 Option1: shallow 
 Option2: deep 
 Explanation: Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.
[A]: deep


[Q]: Question: If Jim moves his telescope to a location with less air above it, what will happen to the amount of interference from the atmosphere? 
 Option1: increase 
 Option2: decrease 
 Explanation: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.
[A]: decrease


[Q]: Question: Stretching a rubber band out _____ its elastic potential energy. 
 Option1: decreases 
 Option2: increases 
 Explanation: The farther the object is stretched or compressed, the greater its elastic potential energy is.
[A]:
increases