Choose the correct word: "Please submit the documents ___ the end of the month."

Correct answer: B. by

"By" means not later than and is used for deadlines. "Until" describes an action that continues up to a point, as in "The office is open until five."

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Answer and explanation

The correct answer is B. by

"By" means not later than and is used for deadlines. "Until" describes an action that continues up to a point, as in "The office is open until five."