Ace the TSA CBT Exam 2025 – Get Ready to Fly Through with Confidence!

Relative pronouns play a crucial role in connecting a subordinate clause to the main clause in a sentence. They introduce relative clauses, which provide additional information about a noun and enhance the meaning of the main clause. For example, in the sentence "The book that I borrowed was fascinating," "that I borrowed" is a subordinate clause linked to the main clause "The book was fascinating," giving more detail about the book.

This function of relative pronouns allows for complex sentence structures that add depth and clarity to communication, making option B the correct choice. The other options do not accurately represent the primary role of relative pronouns in sentence structure.