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: Milo owns two telescopes, one at the top of a mountain and one at the base. If he looks through the one at the top of the mountain, how much interference can he expect compared to the one at the top of the mountain? 
 Option1: more 
 Option2: less 
 Explanation: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.
[A]: more


[Q]: Question: When the villagers are living longer, the food source is likely 
 Option1: great 
 Option2: small 
 Explanation: More recently, the death rate has fallen because of the availability of more food and medical advances.
[A]: great


[Q]: Question: If Mona owns a greenhouse and she decides to cover the top up to restrict sunlight, what happens to her plant's ability to make food? 
 Option1: increases 
 Option2: decreases 
 Explanation: Less photosynthesis means that plants and phytoplankton produce less food.
[A]:
decreases