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: A piece of sandpaper was rubbed across a glass table, then the sandpaper was rubbed across some gravel. The friction will be greater between 
 Option1: the sandpaper and the glass table or 
 Option2: the sandpaper and the gravel. 
 Explanation: Rougher surfaces have more friction between them than smoother surfaces.

A: the sandpaper and the gravel.
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Q: Question: If you defocus the sun's rays with a lens they are 
 Option1: weaker 
 Option2: stronger 
 Explanation: The more focused the Suns rays are, the more energy an area receives and the warmer it is.

A: weaker
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Q: Question: Air pressure inside the lungs will _____ when one exhales out deeply. 
 Option1: increase 
 Option2: decrease 
 Explanation: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.

A:
increase
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