Question

german scientists were concerned about nazi restrictions on uranium sales because
o uranium would not be available for industrial research.
o uranium was important to german missile programs.
o uranium paid for german scientific research.
o uranium could be used in research on atomic weapons.

Explanation:

Uranium is a key element in atomic weapons research. Nazi restrictions on its sales would hinder such research efforts. Options A (industrial research is not the main concern here), B (missile programs - uranium's main significance in this context is atomic weapons not missiles), and C (uranium paying for research is not the relevant point) are less relevant compared to the atomic weapons research aspect.

Answer:

D. uranium could be used in research on atomic weapons.