Final answer:
The words in bold 'WHAT THE BEST COURSE OF ACTION WOULD BE' constitute a dependent clause, also known as a subordinate clause.
Step-by-step explanation:
The words in bold, "WHAT THE BEST COURSE OF ACTION WOULD BE," form a dependent clause (also known as a subordinate clause). A dependent clause is a group of words that contains both a subject and a verb but cannot stand alone as a complete sentence. It relies on an independent clause to provide a complete thought. In this case, the clause "what the best course of action would be" cannot stand by itself and is part of the larger sentence that provides context, which makes it dependent.