Answer:
Wallace's main argument is that he cannot but feel that these actions (bomb-testing) must make it look to the rest of the world as if the U.S. was only paying lip service to peace at the conference table.
scientific theory is an explanation of some aspect of the natural world that can, in accordance with the scientific method, be repeatedly tested, using a predefined protocol of observations and experiments.
I did some research and the lowest range was 1,000,000 and the highest was 1,700,000. Its hard to estimate this because they didnt have the proper recording instruments we have today.
Definitely C which is Russia