You use" " which are called quotation marks
The correct answer is My brother loves to cook, but he especially loves to barbecue.
Explanation:
The sentence "My brother loves to cook, he especially loves to barbecue" is a run-on sentence because each of the sections in the sentence is a complete sentence, and complete/independent sentences cannot be connected using a comma. Instead, a semicolon should be used (;) or a conjunction such as and, but, or can be added after the comma. This second method of correction occurs in the sentence "My brother loves to cook, but he especially loves to barbecue".
Answer:
b. Gene laughed throughout the movie, but his date didn't laugh once.
Explanation:
because as gene laughed his date didn't
so no comma needed as that third option nor blank as that first option
My best guess would be A.