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.
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Question: Question: A wave with a shorter wavelength will have a _____ frequency 
 Option1: longer 
 Option2: shorter 
 Explanation: Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa.

Answer: longer


Question: Question: Ease of mobility _____ when the animal is decreased in size. 
 Option1: increase 
 Option2: decrease 
 Explanation: The larger the animal, the heavier the exoskeleton, making movement more difficult.

Answer: increase


Question: Question: After Sarah finishes her walk, she notices that her blood is not really pumping that hard. Sarah can know that since it's a cool day, she's giving off what kind of heat compared to usual? 
 Option1: more 
 Option2: less 
 Explanation: On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.

Answer:
less