Correct Answer: B

Rationale: Fasting for at least 12 hours is necessary before a cholesterol and triglyceride test to ensure accurate results by avoiding fluctuations that can occur after eating. Choice A is incorrect because a fat-free diet is not required; fasting is. Choice C is incorrect as it suggests having the test right after eating, which can affect the results. Choice D is incorrect as there is no need to stay at the laboratory for 2 blood samples unless specifically instructed by a healthcare provider.

Correct Answer: A

Rationale: The correct answer is A: Stop smoking. Smoking causes vasoconstriction, worsening the symptoms of Raynaud's phenomenon. Quitting smoking is crucial in managing this condition effectively. Choices B, C, and D are not as directly related to the pathophysiology of Raynaud's phenomenon. While keeping feet dry and reducing stress can be beneficial for overall health, they are not as directly linked to managing Raynaud's phenomenon as smoking cessation.

Correct Answer: D

Rationale: The correct answer is D: 12-24 hours. Withdrawal symptoms typically begin within 12-24 hours after the last drink. This period is when the client is at the highest risk for experiencing withdrawal symptoms. Choices A, B, and C are incorrect because they do not align with the typical timeline for alcohol withdrawal symptoms to manifest. Symptoms usually peak within the first 24 to 48 hours after the last drink, making the 12-24 hour window critical for monitoring and managing any potential withdrawal complications.

Correct Answer: D

Rationale: The PPD (purified protein derivative) intradermal test is the standard screening method for detecting tuberculosis infection. It helps identify individuals who have been infected with Mycobacterium tuberculosis. A chest x-ray (Choice A) is used to assess the extent of active disease, not for screening purposes. Blood culture (Choice B) is not typically used for tuberculosis screening. Sputum culture (Choice C) is used to confirm active tuberculosis in symptomatic individuals, not for initial screening purposes.

Correct Answer: A

Rationale: The correct answer is A: 'Unhealthy diet, physical inactivity, and smoking.' These are major risk factors associated with cardiovascular diseases (CVDs), cancer, chronic obstructive pulmonary disease (COPD), and diabetes mellitus (DM). Unhealthy diet can lead to obesity and other health issues, physical inactivity contributes to various chronic conditions, and smoking is a well-known risk factor for cancer and respiratory diseases. Choice B is incorrect as hypertension is a condition that can result from these risk factors rather than being a risk factor itself. Poor stress management, although important for overall health, is not a major risk factor for the mentioned NCDs. Choice C is incorrect as although obesity is a risk factor, it is not mentioned in the question stem. Choice D is incorrect as alcoholism is not listed among the major NCDs or the common risk factors provided.