Final answer:
Option A - Stunned by the news, the crowd stood in silence is the correct punctuated sentence.
Step-by-step explanation:
The sentence that is correctly punctuated is option A: Stunned by the news, the crowd stood in silence. This sentence is correctly punctuated because the participial phrase "Stunned by the news" is set off by commas to separate it from the rest of the sentence. The comma after "news" indicates that the phrase is an introductory element, providing additional information about the crowd.
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