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: Hundreds of years ago there were fewer people on the Earth than there are today. Because of this, there was 
 Option1: more water 
 Option2: less water. 
 Explanation: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.

SOLUTION: more water

PROBLEM: Question: The ball began to raise slowly above the table. The higher it rises above the table, the potential energy will 
 Option1: decrease 
 Option2: increase. 
 Explanation: So the higher an object is above a surface, the more potential energy it has.

SOLUTION: increase.

PROBLEM: Question: Mary took a medication to higher blood pressure. What is likely happening to the blood volume in the vessels? 
 Option1: it decreases 
 Option2: it increases 
 Explanation: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.

SOLUTION:
it increases