Answer:
D. to acquire people
Step-by-step explanation:
He wanted to get land so A. is out of the question. In order to kill off all of the Jews he is going to need a lot of raw materials for bullets, and guns, also going around and taking land for raw materials was normal then so C. is out also. And now for B., countries went around taking over other countries in order to get food also back then, especially if they are in a war. So that means that the only logical answer would be D.