Which sentence correctly uses a colon to introduce an explanation?

Which sentence correctly uses a colon to introduce an explanation?

• A. The plan remains simple; we will start at dawn.
• B. The plan remains simple: we will start at dawn.
• C. The plan remains simple - we will start at dawn.
• D. The plan remains simple, we will start at dawn.

Answer: (B)

Using a colon after a complete sentence to introduce what follows as an explanation or elaboration is the right move here. The first part, “The plan remains simple,” is a complete thought, and the second part, “we will start at dawn,” explains what that plan actually involves. The colon signals that the second part directly explains or details the first, making the relationship between the two parts clear and smooth. A semicolon could link two related full thoughts, but it doesn’t flag that the second clause explains the first. A dash can introduce a related idea in a less formal, more abrupt way, which isn’t the best fit for signaling explanation. A comma would create a run-on by joining two independent clauses without proper punctuation.

Using a colon after a complete sentence to introduce what follows as an explanation or elaboration is the right move here. The first part, “The plan remains simple,” is a complete thought, and the second part, “we will start at dawn,” explains what that plan actually involves. The colon signals that the second part directly explains or details the first, making the relationship between the two parts clear and smooth.

A semicolon could link two related full thoughts, but it doesn’t flag that the second clause explains the first. A dash can introduce a related idea in a less formal, more abrupt way, which isn’t the best fit for signaling explanation. A comma would create a run-on by joining two independent clauses without proper punctuation.