Final answer:
The sentence that is punctuated correctly is: b) The actors bowed; the curtain descended.
Step-by-step explanation:
The sentence that is punctuated correctly is:
b) The actors bowed; the curtain descended.
In this sentence, the two independent clauses, 'The actors bowed' and 'the curtain descended', are correctly separated by a semicolon. This punctuation choice allows for a clear and concise presentation of the actions being described.
Learn more about Punctuation in English sentences