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: Clare stopped rubbing two sticks together. The sticks became 
 Option1: hot 
 Option2: cold 
 Explanation: Friction causes the molecules on rubbing surfaces to move faster, so they have more heat energy.

SOLUTION: cold

PROBLEM: Question: When going out in the sun you wear a low SPF sunscreen because it protects 
 Option1: worse 
 Option2: better 
 Explanation: A sunscreen with a higher SPF protects the skin longer.

SOLUTION: worse

PROBLEM: Question: If particles drift apart, they will pass energy to each other 
 Option1: quicker 
 Option2: slower 
 Explanation: When particles of matter are closer together, they can more quickly pass the energy of vibrations to nearby particles.

SOLUTION:
slower