Final answer:
The correct punctuation for the sentence in question is to include the dates directly without parentheses, which is option B) January 16 and February 24.
Step-by-step explanation:
The correct punctuation for the sentence "I can make only two of the meetings __________ because I will be in Boston." is option B) January 16 and February 24. The parentheses are unnecessary in this context because the dates are part of the sentence and not additional information that can be omitted. The sentence should read: I can make only two of the meetings January 16 and February 24 because I will be in Boston. Here, the dates are included directly in the sentence, providing a clear and concise message.