Correct Answer: A

Rationale: The correct answer is A: Genetic research. Telomere shortening is primarily based on the theory of cellular senescence, which is related to genetic research. Telomeres are protective caps at the end of chromosomes that shorten with each cell division. Genetic research has shown that telomere shortening is associated with aging and age-related diseases. Caloric restriction, oxidative stress, and cross-link theories of aging are not directly linked to telomere shortening. Caloric restriction focuses on extending lifespan by reducing calorie intake, oxidative stress theory suggests that aging is caused by cumulative damage from reactive oxygen species, and cross-link theory emphasizes the accumulation of non-reversible bonds between molecules as a cause of aging.

Correct Answer: A

Rationale: The correct answer is A: Genetic research. Telomere shortening is primarily based on the theory of cellular senescence, which is related to genetic research. Telomeres are protective caps at the end of chromosomes that shorten with each cell division. Genetic research has shown that telomere shortening is associated with aging and age-related diseases. Caloric restriction, oxidative stress, and cross-link theories of aging are not directly linked to telomere shortening. Caloric restriction focuses on extending lifespan by reducing calorie intake, oxidative stress theory suggests that aging is caused by cumulative damage from reactive oxygen species, and cross-link theory emphasizes the accumulation of non-reversible bonds between molecules as a cause of aging.

Correct Answer: C

Rationale: The correct answer is C because assigning female nurses to older women who are Islamic respects their cultural and religious beliefs, promoting holistic care. This approach considers the older adult's physical, emotional, social, and spiritual needs, aligning with the principles of holistic nursing care. Choice A is incorrect because performing glucose testing during a weekly worship service does not necessarily address the older adult's holistic needs. Choice B is incorrect as simply wheeling ambulatory adults to exercise when running late does not encompass a holistic approach. Choice D is incorrect as allowing older adults in a nursing home to eat meals alone may neglect their social and emotional well-being.

Correct Answer: B

Rationale: The correct answer is B because a peak flow meter is used to monitor and measure the peak expiratory flow rate, which helps determine if the client is developing asthma symptoms such as airway constriction. It provides feedback on the client's lung function, helping to assess asthma control and guide treatment. Choices A, C, and D are incorrect because a peak flow meter is not used for administering medications, identifying allergy triggers, or limited to specific healthcare professionals.

Correct Answer: C

Rationale: The correct answer is C: To offer holistic care that allows older adults to live in the community. PACE aims to provide comprehensive and coordinated care to help seniors remain independent in their homes and communities. This includes medical, social, and behavioral services. Choice A is incorrect as PACE focuses on holistic care rather than just intensive medical treatment. Choice B is incorrect as PACE aims to prevent nursing home placement by supporting older adults to live at home. Choice D is incorrect as while PACE may help reduce healthcare costs through preventive and coordinated care, the primary goal is to support seniors in living in the community.