Correct Answer: A

Rationale: The nurse's actions of providing an analgesic medication and darkening the room aim to decrease stimuli from the cerebral cortex. Reduction of environmental stimuli, especially light and noise, from the cerebral cortex, which is an area of arousal, facilitates sleep. By decreasing input to this area, the client is more likely to fall asleep and stay asleep. Choices B, C, and D are incorrect because the scenario does not involve stimulating hormonal changes, influencing the circadian rhythm, or alerting the hypothalamus.

Correct Answer: B

Rationale: In this scenario, the priority is the safety and well-being of the client. The neighborhood facility's lack of experience in caring for a client with an epidural catheter for continuous opioid infusion raises concerns about the quality of care they can provide. Therefore, the most appropriate action for the discharge planning nurse is to explain the situation to the client and family and seek another long-term care facility that can provide the necessary care. Option A, arranging for immediate in-services, may not be feasible or timely, considering the urgent need for appropriate care. Option C, encouraging the family to hire private duty nurses, does not ensure the facility's overall capability to manage the client's complex needs. Option D, 'None of the above,' is not the best choice as the client's safety should be the priority in this situation.

Correct Answer: D

Rationale: The correct answer is infant rice cereal. Single-grain infant cereals are recommended as the first solid food because they are easily digestible and have added iron content. Choice C, yogurt, is incorrect because yogurt is a milk product and should be delayed until the child is 12 months old due to the risk of milk allergy. Choices A and B are incorrect because fruits and vegetables are typically introduced after cereals to help the infant get accustomed to solid foods gradually.

Correct Answer: D

Rationale: All of the provided choices are antiviral drug classes used in the treatment of HIV/AIDS. Nucleoside reverse transcriptase inhibitors, such as tenofovir and emtricitabine, work by interfering with the virus's ability to replicate. Protease inhibitors, like atazanavir and darunavir, block an enzyme that HIV needs to make copies of itself. HIV fusion inhibitors, for instance, enfuvirtide, prevent HIV from entering human cells. Therefore, 'all of the above' is the correct answer as all the listed drug classes are commonly used in managing HIV infections. Choices A, B, and C are all essential components of antiretroviral therapy for HIV, targeting different stages of the virus's life cycle. The combination of drugs from these classes is often recommended to effectively control HIV replication and reduce viral load.

Correct Answer: D

Rationale: The correct answer is extension, flexion, inversion, and eversion. These exercises help assess the full range of motion of the ankles. Flexion and extension evaluate the bending and straightening movements of the ankle joint, respectively. Inversion and eversion assess the inward and outward movements of the foot at the ankle joint. Hyperextension, abduction, and adduction are not specific movements of the ankle joint, making choices A and B incorrect. External and internal rotation are movements more related to joints like the hip or shoulder, not the ankle, making choice C incorrect.