Correct Answer: A

Rationale: HIV can be transmitted from a mother to her baby during childbirth or breastfeeding, making choice A the correct answer. Tears, human bites, and insect bites are not common modes of HIV transmission. While human bites can potentially transmit the virus, it is less common compared to mother-to-child transmission.

Correct Answer: B

Rationale: The correct answer is B, 'Lotion.' A lotion is a liquid dispersion that contains insoluble solids or liquids for topical application. Ointments are more semi-solid and occlusive, pastes are thicker and contain higher concentrations of solids, and gels have a jelly-like consistency due to their three-dimensional network structure. Therefore, among the options, a lotion is the most suitable choice for containing insoluble solids or liquids for topical application.

Correct Answer: A

Rationale: The correct response is A: 'Do not expose other children as the virus is very contagious even without direct contact.' RSV is highly contagious, especially in young children. Allowing the infected child to attend a birthday party can put other children at risk of contracting the virus. Choice B is incorrect as RSV can remain contagious for a period of time. Choice C is not sufficient, as wearing a mask may not entirely prevent the spread of the virus. Choice D is inaccurate, as children under 5 months are not the only ones susceptible to RSV; all young children are at risk.

Correct Answer: C

Rationale: The most appropriate action for the PN to implement first is to implement complementary pain relief methods. This includes repositioning the client, applying heat or cold packs, or using relaxation techniques. These strategies can provide additional pain relief before the next dose of medication is due or before seeking further instructions from the healthcare provider. Calling the healthcare provider immediately to request a different analgesic (Choice A) may not be necessary at this moment since other non-pharmacological methods can be attempted first. Determining when morphine can be given again (Choice B) is important but addressing the client's immediate pain relief takes precedence. Observing the dressing for bleeding (Choice D) is important but not the first priority when the client is experiencing unrelieved pain.

Correct Answer: A

Rationale: The correct answer is A: Oxygen transport. Hemoglobin in red blood cells binds to oxygen in the lungs and carries it to tissues throughout the body, releasing it where needed. This process is essential for cellular respiration and energy production. Choices B, C, and D are incorrect because hemoglobin's primary function is not related to immunity, blood clotting, or carbon dioxide transport. Hemoglobin's main role is to transport oxygen, ensuring adequate oxygen supply to body tissues for metabolic processes.