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: Mona is an electrical engineer designing a new circuit. If she increases the total number of resistors in her new circuit, what happens to the total current of the circuit? 
 Option1: increase 
 Option2: decrease 
 Explanation: If we increase the resistance in a series circuit, by adding more resistors, then the total current decreases.

SOLUTION: decrease

PROBLEM: Question: By filling a kettle with water and placing it in a freezer turned to low, will the motion of the water molecules in the kettle 
 Option1: increase in speed 
 Option2: decrease in speed. 
 Explanation: The higher the temperature, the more energy the particles have and the faster they will move and diffuse.

SOLUTION: decrease in speed.

PROBLEM: Question: What would happen to the atmosphere as Jim climbed higher up a mountain? 
 Option1: it would become less dense 
 Option2: it would become more dense 
 Explanation: The density of the atmosphere decreases with an increase in the height above sea level (altitude).

SOLUTION:
it would become less dense