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.

[Q]: Question: If the rate of flow in a river were reduced, what would happen to the size of sediment particles being deposited on the riverbed? 
 Option1: smaller particles would be deposited 
 Option2: larger particles would be deposited 
 Explanation: The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.
[A]: smaller particles would be deposited


[Q]: Question: John was watching the particle accelerator and notating the reactions of the atoms. He observed that an object with more mass has a thermal energy that is 
 Option1: More 
 Option2: Less 
 Explanation: Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.
[A]: More


[Q]: Question: Milo uses an engine to produce energy at his job. If his engine starts producing less wasted output energy, what would happen to the efficiency of his system? 
 Option1: more efficient 
 Option2: less efficient 
 Explanation: The greater the wasted output energy, the less efficient the system.
[A]:
more efficient