Question

act english practice 3
how do volcanoes work?
show passage
geologic processes themselves. (8) are slow, so research must include the study of ancient human accounts of eruptions and layers of rock millions of years old.
which choice would most clearly communicate the extreme length of time it takes for geologic processes to occur?
select one answer
a no change
b are virtually imperceptible
c can be gradual
d take a long time
question 53/75
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Explanation:

The question is about choosing the best phrase to communicate the extreme length of time for geologic processes. Option D ("take a long time") directly conveys the idea of a lengthy duration, which matches the context of geologic processes taking millions of years. Option A ("NO CHANGE") with "are slow" is less direct in emphasizing time length. Option B ("are virtually imperceptible") focuses on being hard to notice, not time length. Option C ("can be gradual") emphasizes the pace, not the time duration. So D is the best choice.

Answer:

D. take a long time