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: If you keep something whole before putting it into water it will dissolve
Option1: slower
Option2: faster
Explanation: Therefore, increasing the surface area of solid reactants increases the reaction rate.

A: slower
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Q: Question: As Earth's climate becomes warmer it will develop _____ varieties of vegetation?
Option1: less
Option2: more
Explanation: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

A: more
****
Q: Question: Compared to an obese person who has never exercised, would an Olympic sprinter in perfect condition be more likely to have a heart that can, with each beat, move
Option1: more blood
Option2: less blood?
Explanation: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.

A:
more blood
****