Question

instructions
the following sentence has a blank indicating that something has been left out. beneath the sentence are four words or phrases. choose the word or phrase that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
question
during spring in the southwestern united states, temperatures often ________ widely, with highs as hot as 90 degrees fahrenheit one day and lows as cold as 50 degrees fahrenheit the next.
○ expand
○ fluctuate
○ intersperse
○ regulate

Explanation:

The sentence describes temperatures changing from high to low. "Fluctuate" means to vary irregularly, which fits the context of temperature changes. "Expand" means to increase in size, "intersperse" means to place among others, and "regulate" means to control, none of which fit the temperature - change context.

Answer:

fluctuate