The sentence that uses commas correctly is B) Rice, beans, and tortillas are foods commonly eaten in Mexico, Guatemala, and Costa Rica.
You have to add a comma in front of <em>and.</em>
Answer:
a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause, as in “the man on the platform,” “she arrived after dinner,” “what did you do it for ?”.
Explanation:
Answer: A
Explanation:" the movie left her in tears." It is a main clause but " although ......" is a subordinate clause