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.
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Question: Question: If Mona is manipulating the charge of a couple of her objects, what happens to the electrostatic force if she decreases the charge of one of the objects? 
 Option1: increase 
 Option2: decrease 
 Explanation: The more charged the objects are, the stronger the electrostatic force between them.

Answer: decrease


Question: Question: David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass attaches, allowing the rocket to go 
 Option1: higher 
 Option2: lower 
 Explanation: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.

Answer: lower


Question: Question: Causing particles in a longitudinal wave to move further apart causes the amplitude to 
 Option1: decrease 
 Option2: increase 
 Explanation: The closer together the particles in a longitudinal wave are, the greater the amplitude.

Answer:
decrease