Answer:
A verb is a action in a sentence.
For example: He runs fast. Runs is the verb because its an action.
I can’t answer this without the paragraphs but if I had to answer I would say the answer is the second one
Sonny learns about the sun and the stars.
The way Joe Willow explains the change from day to night, is that when "daddy", in this case the sun, "goes to bed" (sets), "all the little children come out". The "little children" refer to the stars, they are coming out in the sky at night time.