Final answer:
The side effects of Dtap can occur within a specific timeframe after administration.
Step-by-step explanation:
The side effects of Dtap, which is a vaccine that protects against diphtheria, tetanus, and pertussis, can occur at different times after administration. Common side effects include nausea, diarrhea, vomiting, which can last for 24-48 hours. There is also a possibility of dehydration and changes in blood pressure and heart rate.
Therefore, the correct answer to the question is C) 24-72 hours after administration, as these symptoms may take some time to develop.