Churchill’s speech was meant to inspire the British people to continue fighting in the war, and to protect and fight for the survival of their empire and everything they stood for, and to do this as a united nation against their opponent.
Answer:
The infinite phrase is choice A: "to return the sweater".
Explanation:
An infinite phrase is described as a verb plus modifying words. "Return" is a verb, and "to" is a modifying word. "To return" is the infinite phrase.