Correct Answer: D

Rationale: Rebound tenderness can indicate peritonitis, which requires immediate intervention.

Correct Answer: A

Rationale: Conducting free blood pressure screenings helps identify individuals with hypertension and connects them to necessary medical care.

Correct Answer: A

Rationale: Offering free cancer screenings provides participants with immediate, valuable information about their cancer risk.

Correct Answer: A

Rationale: Creating a school-based exercise program directly targets increasing physical activity among children, which is essential in preventing obesity.

Correct Answer: B

Rationale: Offering cooking classes that focus on healthy recipes is the most effective strategy among the choices provided. These classes not only provide valuable knowledge about nutrition but also offer hands-on experience in preparing healthy meals. This practical approach can significantly impact participants' behavior and increase the likelihood of them adopting healthier eating habits. Distributing educational pamphlets may not have the same level of engagement and interaction as cooking classes. A social media campaign, while informative, may not result in direct behavioral changes. Providing free health screenings, though beneficial for early detection, does not directly address the promotion of healthy eating habits, unlike the hands-on approach of cooking classes.