Question: As the Universe expands, galaxies move further and further apart. The decreasing distances between galaxies indicates the Universe is expanding or contracting?
Answer: contracting

Question: The pupil automatically gets bigger or smaller to let more or less light in as needed. If Jim's pupil gets smaller, what will happen to the amount of light that enters his eye more light will enter or less light will enter?
Answer: less light will enter

Question: Anaerobic exercises cause muscles to get bigger and stronger. If Jim starts exercising and performs more anaerobic exercises, would his muscles get bigger or smaller?
Answer:
bigger