Correct Answer: B

Rationale: The correct answer is B: "Reduce acid secretion." Vagotomy is performed to reduce acid secretion by cutting the vagus nerve, which stimulates acid production. Choices A, C, and D are incorrect. A vagotomy does not increase acid secretion, promote gastric emptying, or remove the ulcerated area. It specifically aims to decrease acid production to help in the healing of peptic ulcers.

Correct Answer: A

Rationale: Diaphoresis and shakiness are classic signs of hypoglycemia in a client with insulin-dependent diabetes mellitus. Hypoglycemia is a medical emergency that requires immediate intervention to prevent further complications. The nurse should address this complaint promptly by providing a fast-acting source of glucose to raise the client's blood sugar levels. Reduced sensation in the lower leg may indicate peripheral neuropathy, which is a common complication of diabetes but does not require immediate action unless there are signs of injury. Intense thirst and hunger are symptoms of hyperglycemia, which also requires intervention but not as urgently as hypoglycemia. A painful hematoma on the thigh may require assessment and management, but it is not as urgent as addressing hypoglycemia.

Correct Answer: B

Rationale: Prevalence is the correct answer as it refers to the number of existing cases of a disease in a specific population at a given time. Incidence, on the other hand, refers to the number of new cases of a disease in a defined population over a specific period. Mortality rate is the measure of the number of deaths in a particular population due to a specific cause, while morbidity rate is the frequency of a disease in a specific population.

Correct Answer: D

Rationale: Building a healthy community is indeed based on principles like concreteness, group dynamics, and focusing on community-level change. However, stating that environmental factors are more basic than institutional factors is incorrect. Both environmental and institutional factors play crucial roles in community health. Environmental factors like access to healthcare, clean water, and safe housing are vital, while institutional factors such as healthcare systems, education, and governance also significantly impact community health. Therefore, the correct answer is D, as environmental factors are not more basic than institutional factors.

Correct Answer: D

Rationale: The correct answer is D: 4-6 years of age. The CDC recommends administering the MMR booster to children aged 4 to 6 years. This booster dose is essential to ensure continued immunity against measles, mumps, and rubella. Choices A, B, and C are incorrect because they do not align with the CDC guidelines for the age range of MMR booster administration.