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 speaking to Milo in a soft tone and then decreases the amplification of the sound waves leaving her mouth, what will happen to the loudness level of her voice? 
 Option1: increase 
 Option2: decrease 
 Explanation: Amplified sound waves have more energy, which increases the intensity and loudness of the sounds, so they are easier to hear.

SOLUTION: decrease

PROBLEM: Question: Will takes away half of a rock. The total surface area of the rock has now 
 Option1: decreased 
 Option2: increased 
 Explanation: As rock breaks into smaller pieces, the surface area of the pieces increases.

SOLUTION: decreased

PROBLEM: Question: When the truck is moving slower, there is _____ fluid friction. 
 Option1: more 
 Option2: less 
 Explanation: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

SOLUTION:
less