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: 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: If Jim loses a lot of blood from a cut he sustains, what will happen to his blood pressure? 
 Option1: it will become lower 
 Option2: it will become higher 
 Explanation: If blood volume in the body decreases, blood pressure decreases.

Answer: it will become lower


Question: Question: If Jim lowers the temperature of the air inside his balloon, will his balloon rise higher into the air or sink towards the ground? 
 Option1: rise higher 
 Option2: sink lower 
 Explanation: Warm air is less dense than cool air, so it rises higher in the troposphere.

Answer:
sink lower