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 Mona is comparing a football and a baseball and she determines that the football is rougher then the baseball, which item has less friction? 
 Option1: football 
 Option2: baseball 
 Explanation: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.

SOLUTION: baseball

PROBLEM: Question: Ease of mobility _____ when the animal is decreased in size. 
 Option1: increase 
 Option2: decrease 
 Explanation: The larger the animal, the heavier the exoskeleton, making movement more difficult.

SOLUTION: increase

PROBLEM: Question: If Jim wants to raise the pH of his solution he should do what to the concentration of hydrogen ions inside of it? 
 Option1: decrease 
 Option2: increase 
 Explanation: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.

SOLUTION:
decrease