Honestly I don’t even understand the question
This is punctuated correctly.
"Marshmallows are my favorite snack" is a complete sentence unto itself.
The comma instead of a period shows that the sentence spoken is part of the whole sentence, which includes the speaker (she) and a word to describe how the speaker said it (explained).
Jonas has homework, but it isn't finished. Jonas has homework that isn't finished.
Answer:
all I know is that simile is 4
True because it has a big effect on the world