Correct Answer: D

Rationale: A specific, measurable objective like reducing the number of underweight children by 10% is well-stated. This objective is clear, quantifiable, and time-bound, making it easier to track progress and evaluate the effectiveness of the plan. Choices A, B, and C are not as well-stated as they lack specificity, measurability, and a quantifiable target.

Correct Answer: A

Rationale: The correct answer is to validate that the children who were sent home had chickenpox. This is crucial in confirming the presence of varicella, which is necessary for appropriate management and control of the outbreak. Option B is not the first intervention because the focus initially is on verifying the cases within the daycare center. Option C is incorrect as it suggests a prolonged exclusion period without confirming the diagnosis. Option D is inappropriate and potentially harmful, as sending a child back without proper assessment can lead to further spread of the infection.

Correct Answer: A

Rationale: High protein levels in the cerebrospinal fluid are indicative of bacterial meningitis, as the presence of bacteria in the CSF leads to increased protein production. Elevated protein levels can be seen in inflammatory conditions like meningitis. Choice B, clear color, is not expected in meningitis as it is typically associated with cloudy or turbid CSF. Elevated sed rate (choice C) and increased glucose (choice D) are not typically associated with the laboratory findings seen in meningitis.

Correct Answer: A

Rationale: The correct answer is A. Chest indrawing may not always be present and can vary with the child's activity level, so it should not be expected to be present at all times. Choice B is correct because the lower chest wall should not go in when the child breathes in. Choice C is correct as the lower chest should go in when the child breathes in, indicating chest indrawing. Choice D is correct as a calm child makes it easier to assess chest indrawing, but the absence of chest indrawing does not mean the child is not calm.

Correct Answer: C

Rationale: The correct answer is the 60-year-old homeless person who is an alcoholic and smokes. This individual has the highest risk of developing community-acquired pneumonia due to factors such as homelessness, alcoholism, and smoking, which weaken the immune system and make them more susceptible to respiratory infections. Choice A is incorrect as working with underprivileged children, while potentially exposing the individual to various illnesses, does not directly increase the risk of pneumonia. Choice B is less likely as exercise-induced wheezing may suggest asthma but does not directly correlate with pneumonia risk. Choice D, an aerobics instructor who eats only vegetables and skips meals, does not have the same level of risk factors for pneumonia as the homeless person in choice C.