Correct Answer: B

Rationale: An immunization functions as part of acquired immunity. Acquired immunity involves the production of antibodies after immunization, which helps protect against future infections. Natural immunity is not induced by immunization but is present from birth. Passive immunity is temporary and acquired through the transfer of pre-formed antibodies. Cell-mediated immunity is a type of immune response that involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

Correct Answer: B

Rationale: A heart rate of 120 beats per minute indicates tachycardia, which can be a sign of dehydration and requires intervention. A heart rate of 80 beats per minute is within the normal range and does not indicate dehydration. A blood pressure of 110/70 mmHg is considered normal. A respiratory rate of 16 breaths per minute is also within the normal range and does not point towards dehydration.

Correct Answer: D

Rationale: The correct answer is D because clients can change their living will at any time as long as they are mentally competent. Choice A is incorrect because relying solely on family to make decisions may not align with the client's wishes. Choice B is incorrect because a living will can address various situations, not just loss of consciousness. Choice C is incorrect because the client should be the primary decision-maker regarding their living will, not the family.

Correct Answer: C

Rationale: The correct answer is C: Orange slices. For a client on a mechanical soft diet, foods that are difficult to chew and swallow should be avoided. Orange slices have membranes that can be challenging to consume for individuals with swallowing difficulties. Steamed carrots (Choice A) and mashed potatoes (Choice B) are typically suitable for a mechanical soft diet as they can be easily mashed or cut into smaller pieces. Soft-cooked eggs (Choice D) are also appropriate for this diet as they are soft and easy to chew.

Correct Answer: A

Rationale: The correct instruction the nurse should include to improve oxygenation for a client with COPD is to 'Use pursed-lip breathing during activities.' Pursed-lip breathing helps improve oxygenation by slowing down the respiratory rate, reducing the work of breathing, and keeping the airways open. This technique also helps prevent the collapse of small airways during exhalation, allowing for more complete emptying of the lungs. Choices B, C, and D are incorrect because deep breathing exercises after meals, diaphragmatic breathing during exercise, and breathing in short, shallow breaths do not specifically target the improvement of oxygenation in individuals with COPD.