Answer:
C
Step-by-step explanation:
a: While atomic bombs/missiles were used, they were not the major form of weaponry
b: The entirety of Germany was taken over by Hitler, so this is false.
c: most chemical weapons were used by Germany, although all sides did use them.
d: While, yes, it was called a world war, much of the fighting stayed in a central area, with only a few outliers escaping.