Answer:
1. The Mustangs are a high school football team in our town. They are one of the top teams in the conference.
2. My cousin, Preston, plays for the Mustangs. He is a linebacker.
3. C
4. Football is popular in our town. Almost everyone attends the Friday night games.
5. Our biggest rivals are the Clarksville Hurricanes. They are last year's champions.
6. C
Explanation:
1. These are two independent clauses that need to be separated.
2. 2 independent clauses that need to be separated.
3. The sentence is correctly punctuated. There is one independent clause and one dependent clause, connected correctly by a comma.
4. 2 independent clauses that need to be separated.
5. 2 independent clauses that need to be separated.
6. Correct. The two independent clauses are connected by a comma and the word, "and".