The answer is d. keep. Hope this helps!
C.
"...<u>without regard to partizanship</u>, we are committed to <u>full support of all</u> those resolute peoples, everywhere, who are <u>resisting aggression</u>" means 'Working together, America will help those who are fighting against tyranny.'
B is the correct answer, because 'because she wanted to impress her family' is the only clause with an active verb, whereas the other examples either don't have a verb (from scratch because), or it isn't active which means it is a phrase, not a clause (to cook a meal from scratch) or an independent sentence (Jenny tried).
