Answer:
The half of the Moon that points toward the Sun looks bright because it is lit by sunlight. The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth. ... As it moves around Earth, more and more of the lit side comes into view.
it would be C the yolk because
I believe the answer is D. don't take my word for it though I may be wrong
The answer is B. Precipitin Test.