Select the most appropriate option to fill in the blank.

Sales ______ from day to day.

fluctuate

The most appropriate option to fill in the blank is fluctuate.

• Fluctuate means to change or vary irregularly. This is the most appropriate word to fill in the blank because it describes the way that sales can go up and down from day to day.
• Swing means to move to and fro or up and down. It is a close match to the word fluctuate, but it is not the most appropriate word because it does not specifically refer to changes in sales.
• Revolves and rotates mean to move around a central point. They do not make sense in the context of the sentence because sales do not move around a central point.