Which of the following countries either has or is likely to develop nuclear weapons?

Which of the following is a way that presidential disability is determined?

A) The Senate states, in writing, that the President is incapacitated. B) Congress asks the Vice President to evaluate the President's condition. C) The Vice President and a majority of the Cabinet inform Congress in writing. D) The President gives a speech explaining who will take over.

Causal conclusions

A) Can be drawn from correlational research. B) Cannot be drawn from correlational and differential research. C) Are established by differential research, but not correlational research. D) Are established by correlational research, but not differential research.