ExplanationThe colon introduces an explanation.
“Not instantaneous” means it doesn’t happen in an instant.
“or even _____” means
“not even _____” — so the blank is something that is less than instantaneous in duration, or perhaps equally quick, but the logic suggests it’s another way of saying
“quick” or
“immediate.”If it’s not instantaneous or even _____, the blank should be a word meaning
“very quick” or
“taking no time.”A. salutary means beneficial, healthful and it is unrelated to time.
B. deliberate means done consciously/intentionally and it is actually the opposite of quick, but if it’s
“not instantaneous or even deliberate,” that doesn’t fit, deliberate would be slower, not faster, than instantaneous.
C. sequential means happening in a sequence it is again unrelated to speed.
D. momentary means lasting for a very short time and this is close in meaning to instantaneous.
E. inevitable means unavoidable once again this is unrelated to speed.
So, the
best answer is D