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.

[EX 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.
[EX A]: deep

[EX Q]: Question: Reid installed an aquifer 20m from the surface. Will installed an aquifer 10m from the surface. Whose aquifer is harder to get water from?
Option1: Reid
Option2: Will
Explanation: The closer to the surface an aquifer is, the easier it is to get the water.
[EX A]: Reid

[EX Q]: Question: Alan saw Venus through his old telescope. He then looked through his bigger, better telescope. Venus likely appears darker through the
Option1: smaller telescope
Option2: bigger telescope
Explanation: Larger telescopes can collect more light.
[EX A]:
smaller telescope