Choose the sentence that is punctuated correctly.

A. Penelope scanned the dim crowded room, full of people, for her brother.
B. Penelope wore a sequined fluorescent dress to the party.
C. Penelope wrote a long, detailed story for her creative writing class.
D. Penelope's favorite aunt, Jane, decided to come for a short sweet visit.

C. Penelope wrote a long, detailed story for her creative writing class.

The sentence that is punctuated correctly is C. Penelope wrote a long, detailed story for her creative writing class.

The sentence that is punctuated correctly is:

C. Penelope wrote a long, detailed story for her creative writing class.

Explanation on how to determine the correct answer:
Punctuation is crucial in conveying meaning and clarity in writing. To determine the correctly punctuated sentence, we need to analyze the punctuation in each option.

A. Penelope scanned the dim crowded room, full of people, for her brother.
This sentence is incorrectly punctuated because there is a comma after "room" that separates the phrase "full of people" from the main sentence. It disrupts the flow of the sentence.

B. Penelope wore a sequined fluorescent dress to the party.
This sentence is also correctly punctuated. It doesn't have any punctuation errors.

C. Penelope wrote a long, detailed story for her creative writing class.
This sentence is the correct answer. It is simply punctuated with a period at the end.

D. Penelope's favorite aunt, Jane, decided to come for a short sweet visit.
This sentence is incorrectly punctuated because it uses unnecessary commas to set off the name "Jane." These commas are not needed as the sentence doesn't require additional information for clarity.

Therefore, the sentence that is punctuated correctly is C. Penelope wrote a long, detailed story for her creative writing class.