Final answer:
The correct punctuation mark to use in this situation is a Dash.
Step-by-step explanation:
The correct answer is B) Dash. Dashes are used to emphasize content, while parentheses are used to downplay content. Parentheses place less emphasis on the enclosed content than commas. Dashes are commonly used to indicate an abrupt change in thought or to provide emphasis. For example, in the sentence 'The sign read Closed: No more films would be shown at the theater,' the dash after 'Closed' draws attention to the fact that the theater will no longer be showing films.