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.

Correct Answer: D

Rationale: An aPTT of 90 seconds is significantly elevated, indicating a high risk of bleeding due to excessive anticoagulation. In this case, the heparin infusion should be stopped immediately to prevent further anticoagulation and an increased bleeding risk. Notifying the healthcare provider is essential to discuss alternative anticoagulation strategies or interventions. Continuing heparin therapy without action could lead to severe bleeding complications. Decreasing or increasing the heparin infusion rate would exacerbate the risk of bleeding, making options A, B, and C incorrect.

Correct Answer: D

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

Correct Answer: C

Rationale: In this situation, the nurse should first instruct the client to perform pursed-lip breathing. Pursed-lip breathing helps improve oxygenation and decrease the work of breathing in clients with COPD. Administering a bronchodilator or increasing the oxygen flow rate may be necessary interventions but addressing the breathing technique through pursed-lip breathing is the initial action to optimize oxygenation. Notifying the healthcare provider immediately is not the first action indicated in this scenario; the nurse should intervene promptly to assist the client in improving breathing before escalating the situation.

Correct Answer: C

Rationale: A medical evaluation is necessary to properly diagnose and treat the condition observed.