The correct answer is B. The Port Harbor Bridge is a source of debate for the town of Port Harbor.
Explanation
Debate is a term that refers to a communication resource that focuses on the collation of different ideas or opinions on a certain topic. The objective of a debate is to present and argue an opinion on an issue to conclude. According to the above, the News Radio Program transcript presents the implicit message of a debate among the residents of Port Harbor, while some want to preserve the Port Harbor Bridge, others do not want to preserve it and each one presents their arguments as expressed in the next paragraph "Residents in the town of Port Harbor are divided over whether they should preserve the Port Harbor Bridge...Opponents argue that preserving the bridge will be too expensive." So, the correct answer is B. The Port Harbor Bridge is a source of debate for the town of Port Harbor.
