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: If Milo's engine is running hot, how will adding oil affect friction?
Option1: increase
Option2: reduce
Explanation: To reduce friction, oil is added to the engine.

SOLUTION: reduce

PROBLEM: Question: Would Jim's solution become more or less acidic if he decreased the concentration of hydrogen atoms in it?
Option1: more acidic
Option2: less acidic
Explanation: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.

SOLUTION: less acidic

PROBLEM: Question: Erin is trying to get her solution to have a pH as far from zero as possible. The best way for Erin to do that is to have the acidity of the solution
Option1: decrease
Option2: increase
Explanation: The more acidic a solution is, the closer its pH value will be to 0

SOLUTION:
decrease