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: When it gets hot out what happens to our blood flow?
Option1: decreases
Option2: increases
Explanation: On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.
[A]: increases

[Q]: Question: john was taking the patients blood pressure and other vital signs. He saw that the lower the blood volume, the pressure was
Option1: Greater
Option2: Less
Explanation: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.
[A]: Less

[Q]: Question: Dean is going into space, and passes through the stratosphere. He looks at the temperature around him as he does, and he sees that as he heads into space, the temperature
Option1: increases
Option2: decreases
Explanation: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.
[A]:
increases