TASK DEFINITION: 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.
PROBLEM: Question: When Shane goes swimming in warmer water, he can move about slowly, whereas in cooler water, Shane's movement is
Option1: faster
Option2: slower
Explanation: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.

SOLUTION: faster

PROBLEM: Question: Sue is moving from a cold city in Canada to a warm tropical island. The type of vegetation and rate of biological weathering be _____ in Sue's new habitat after she makes the move.
Option1: greater
Option2: lesser
Explanation: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

SOLUTION: greater

PROBLEM: Question: Eric decreased the concentration of reactants in the solution. This _____ the total reaction rate.
Option1: decreases
Option2: increases
Explanation: When the concentration of reactants is higher, the reaction rate is faster.

SOLUTION:
decreases