Final answer:
Moderate reactions to intravenous contrast media include faintness and severe vomiting, but not shock, selecting Option C as the correct response.
Step-by-step explanation:
Examples of moderate adverse reactions to iodinated intravenous contrast media include faintness and severe vomiting, but not shock. Shock is considered a severe adverse reaction and constitutes a medical emergency. Therefore, the correct options are 2 (faintness) and 3 (severe vomiting), making Option C the correct answer.