What are the paired punctuation marks that enclose an independent sentence and have the sentence's end punctuation placed inside them, typically more rounded than brackets and less curved than braces?

• A. Parentheses
• B. Brackets
• C. Braces
• D. Quotation marks

Answer: (A)

When you want to set off extra information that could stand as its own sentence, you use the rounded paired marks known as parentheses. They’re the marks that look like gentle curves, more rounded than brackets and less curved than braces. Importantly, if the enclosed content is a complete sentence, the period goes inside the closing parenthesis, as in: She wasn’t sure what to do next. (She needed more time to think.) This use helps clearly separate the aside from the main text without breaking the flow. The other marks shown have different roles—brackets are for technical insertions, braces for grouping in sets, and quotation marks for direct speech or quoted text—so they don’t match the clue about enclosing an independent sentence with the end punctuation inside.