The option that contains an independent clause is the last example - While the team made their play, the frenzied crowd cheered them to victory. The independent clause here would be <em>the frenzied crowd cheered them to victory. </em>
My guess would be D but idk. This is a hard one.
<span>Because Prospero is a powerful character, the feel of the play is serious.</span>
You should know the context in a written piece
Read th e every minute and I get kn choose Caesar for their king do