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 Milo traps gases in a small chamber after having them in a large chamber, what will happen to the rate of collisions between gas particles? 
 Option1: increase 
 Option2: decrease 
 Explanation: This means the rate of diffusion is much slower in liquids than in gases, because the particles of a gas are further apart and collide much less.

A: increase
****
Q: Question: As a boy grows to a man and his larynx grows smaller, his voice gets 
 Option1: deeper 
 Option2: higher. 
 Explanation: The voice becomes deeper as the larynx in the throat grows larger.

A: higher.
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Q: Question: If Jimbo is observing cells in a petri dish and he notices some cells that are particularly active and some cells that aren't very active at all, which cells will have less mitochondria? 
 Option1: active cells 
 Option2: not very active cells 
 Explanation: Cells that are very active would typically have more mitochondria than cells that are less active.

A:
not very active cells
****