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).
C
“their” is a possessive pronoun. So in this case “their” is the football players condescending to “their” uniforms.
Answer:
Great question. What America means to me is the land of the freedom. I think that America is a great nation which stands for justice, freedom, and love. We are the greatest nation in the world!