Correct Answer: D

Rationale: The correct answer is D: Lack of physical exercise contributes the most to aging-related cognitive decline. Regular physical exercise increases blood flow to the brain, promotes neurogenesis, and enhances cognitive function. It also reduces the risk of developing conditions such as dementia and Alzheimer's disease. Chronic stress (A) can impact cognitive function, but it is not the primary factor in aging-related decline. Poor nutrition (B) can negatively affect brain health, but exercise has a more significant impact. Social isolation (C) is also detrimental to cognitive health, but physical exercise has been shown to have a more substantial influence on cognitive decline in aging individuals.

Correct Answer: A

Rationale: The correct answer is A: Crusting. Crusting on the skin of an older client can indicate a potential complication such as an infection or skin condition. It suggests that there may be an issue with the skin's integrity, leading to the formation of crusts. Wrinkling (B) and thinning/loss of elasticity (C) are common age-related changes and not necessarily indicative of a complication. Choice D is a duplicate of choice A, so it is incorrect. In summary, crusting is a sign of a potential skin complication, while the other choices are more likely to be normal age-related changes.

Correct Answer: A

Rationale: The correct answer is A because walking is a physical activity that promotes cardiovascular health, strength, and overall well-being. Regular exercise like walking 3-5 times per week for 30 minutes can help improve circulation, maintain healthy weight, and reduce the risk of chronic diseases. Cooking healthy meals (choice B) is important for nutrition but may not directly promote physical activity. Reading and knitting (choice C) are mentally stimulating but do not provide the physical benefits of exercise. Taking vitamins daily (choice D) is important for overall health but does not substitute for physical activity.

Correct Answer: A

Rationale: Step 1: Acknowledge patient's concern. Step 2: Educate on normal aging changes affecting cognitive function. Step 3: Reassure patient that slight delays in tasks are common. Step 4: Encourage healthy habits to support cognitive function. Step 5: Emphasize the importance of monitoring any significant changes. Summary: Choice A is correct as it addresses the concern, educates on normal aging changes, reassures the patient, and provides guidance on monitoring. Choices B, C, and D are incorrect because they either suggest immediate evaluation without considering normal aging changes or provide inaccurate information about brain function in aging.

Correct Answer: B

Rationale: The correct answer is B: Disengagement theory. This theory suggests that as people age, they naturally withdraw or disengage from societal roles and responsibilities. Mandatory retirement at age 65 aligns with this theory as it reflects the societal expectation of older individuals stepping back from work roles. Role theory (A) focuses on how individuals adapt to various social roles throughout their lives, not specifically related to retirement. Age-stratification theory (C) emphasizes how age impacts societal structures and opportunities, not retirement policies. Social exchange theory (D) focuses on relationships and interactions based on the exchange of resources, not specifically related to retirement age policies.