B. Stationery is the answer.
A. and C. aren't actual words and D. is an adjective referring to something that doesn't move, and is in one spot. Only B. is a noun that refers to office equipment.
from my best knolage, this is very wrong and it is a not b
B. Churchill uses repetition to assure his audience of Britain's determination to win the war.<span />
C is the answer. Because deleterious is the opposite of helpful. And ominous is the opposite of friendly.
the third one, if you add the comma without the when then you would have a comma splice (when you put a comma between 2 independent clauses without a conjunction) adding the when before Cynthia makes the first part a dependent variable and makes it okay to add the comma!
Hope this helps! :)