Answer:
these are some sentences you can use for your letter
The correct answer would be 2.<span> The first sentence contains a nonessential adjective clause that modifies the noun "coach"; therefore, it provides the reader with interesting details about the subject of the sentence. The second sentence contains an essential adjective clause that modifies the noun "coach"; therefore, it clarifies for the reader which coach is being discussed.</span>
It means preconceived opinion that is not based on reason or actual experience