Correct Answer: A

Rationale: The correct answer is A. A 17-year-old who is sexually active with numerous partners is at the highest risk for contracting an HIV infection due to engaging in risky sexual behavior with multiple partners, increasing the likelihood of exposure to the virus. Choice B is less risky as the individual has had a relatively lower number of sexual partners in the past year. Choice C, although involving drug use, does not directly correlate with a higher risk of contracting HIV unless needles are shared. Choice D, a 34-year-old male homosexual in a monogamous relationship, has a lower risk compared to choice A as long as the relationship remains monogamous.

Correct Answer: A

Rationale: The correct answer is A. A 17-year-old who is sexually active with numerous partners is at the highest risk for contracting an HIV infection due to engaging in risky sexual behavior with multiple partners, increasing the likelihood of exposure to the virus. Choice B is less risky as the individual has had a relatively lower number of sexual partners in the past year. Choice C, although involving drug use, does not directly correlate with a higher risk of contracting HIV unless needles are shared. Choice D, a 34-year-old male homosexual in a monogamous relationship, has a lower risk compared to choice A as long as the relationship remains monogamous.

Correct Answer: B

Rationale: The correct answer is B: Glycosylated hemoglobin (HbA1c). Glycosylated hemoglobin provides valuable information about blood glucose control over the past 2-3 months. This test measures the average blood sugar levels during this period, offering a more comprehensive view of long-term glycemic control. Choice A, blood glucose level, reflects the blood sugar concentration at the time of testing and may fluctuate throughout the day. Choice C, urine ketones, indicates the presence of ketones and is more relevant for assessing acute complications like diabetic ketoacidosis. Choice D, serum insulin level, evaluates insulin production and is not a direct indicator of long-term blood glucose control in diabetes management.

Correct Answer: B

Rationale: The most important referral for the nurse to make for the elderly, recently widowed female client who had a mild stroke and limited mobility is Meals-on-Wheels. This service will ensure she receives proper nutrition and support given her circumstances. Pastoral care may provide emotional and spiritual support but is not as essential in this scenario. Grief support group could be beneficial but addressing her nutritional needs takes precedence. Physical therapy may be important for rehabilitation but ensuring proper nutrition is more critical at this time.

Correct Answer: C

Rationale: The correct pathway of blood flow through the heart starts with blood entering the right atrium, moving to the right ventricle, then to the lungs for oxygenation, returning to the left atrium, and finally to the left ventricle before being pumped out to the body. Option A is incorrect as it starts with the ventricles instead of the atria. Option B is incorrect as it has the sequence of ventricles before atria reversed. Option D is incorrect as it has the atria and ventricles mixed up.