Final answer:
In sentence C, the punctuation is correct. The sentence is: 'When given another word to spell, she wrote these letters: S, N, O, and W.'
Step-by-step explanation:
In sentence C, the punctuation is correct. The sentence is: 'When given another word to spell, she wrote these letters: S, N, O, and W.'
The colon (:) is used correctly in this sentence to introduce a list of letters.
Option A is incorrect because a comma (,) should not be used before the word 'and' in a list of items.
Option B is incorrect because a colon (:) should be used instead of a comma (,) to introduce the list of people.
Option D is incorrect because a colon (:) should be used instead of a comma (,) to introduce the list of people.