Correct Answer: A

Rationale: The correct answer is A: Primarily in the last 30 years. This is because advancements in research methodologies, technology, and increased awareness of aging population's health needs have led to a significant increase in research rigor and scope in the past few decades. Choice B is too broad and vague. Choice C is incorrect as research on older adults' health outcomes predates the establishment of Medicare. Choice D is too limited in scope, as research on older adults' health outcomes has been ongoing for more than just the last decade.

Correct Answer: B

Rationale: The correct answer is B because health disparities refer to variations in health outcomes between different groups, often linked to social, economic, or environmental factors. This definition accurately captures the essence of health disparities by emphasizing the differences in health outcomes among various populations. Choice A is incorrect because it describes cultural elimination rather than health disparities. Choice C is incorrect as it focuses on statistical comparison rather than the health outcomes themselves. Choice D is incorrect as it discusses differing values and perspectives, which are not directly related to health disparities. In summary, choice B is the correct answer as it aligns with the definition and concept of health disparities.

Correct Answer: D

Rationale: The correct answer is D, dramatic loss of melanin. Melanin is a pigment responsible for skin color and does not play a role in the development of pressure ulcers. Shearing, decreased body weight, and malnutrition (decreased serum albumin) are all known risk factors for pressure ulcers in the elderly. Shearing can lead to tissue damage, decreased body weight can indicate poor nutrition and muscle wasting, and malnutrition can impair wound healing and skin integrity. Therefore, D is the correct answer as it does not contribute to the likelihood of an elderly person developing a pressure ulcer.

Correct Answer: A

Rationale: The correct answer is A because social aging refers to changes in a person's roles and relationships as they age. Retiring from a job is a significant social change that typically accompanies aging. This indicates a shift in the man's social status and activities, which aligns with the concept of social aging. B, C, and D are incorrect because taking multiple medications, using a walker, and celebrating a 65th birthday are not direct indicators of social aging. While these factors may be related to aging, they do not specifically address the social aspects of aging, which is the focus of the question.

Correct Answer: A

Rationale: The correct answer is A: Monitor the client's blood glucose level. Tremors and confusion in a client with diabetes could indicate hypoglycemia. Monitoring blood glucose levels will confirm if the client's symptoms are due to low blood sugar. Providing a full meal (B) may worsen the situation by delaying the increase in blood sugar. Asking the client to rest (C) does not address the underlying cause. Administering insulin immediately (D) without knowing the current blood glucose level can further lower blood sugar levels. Hence, monitoring the blood glucose level is the most appropriate initial action.