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).
Tell me howmany inches make one food
Answer:
sequential this helps keeps things in order to
Answer:
First pllz send ur question's in a good way
Explanation:
Means ur question doesn't make any sense...