Correct Answer: B

Rationale: The correct answer is B: Greater when used in conjunction with pharmacological therapy. This is because combining alternative therapies with pharmacological treatment can often provide a synergistic effect, resulting in better pain management outcomes. Alternative therapies such as physical therapy, acupuncture, or mindfulness techniques can complement the effects of medications, leading to improved pain relief. Options A and D are incorrect as age alone does not determine the effectiveness of alternative therapies. Option C is also incorrect as combining therapies can enhance overall pain management strategies.

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: B

Rationale: The correct answer is B: Delirium in older adults results from reversible metabolic changes, such as electrolyte imbalances. Delirium is a multifactorial condition often triggered by physiological imbalances, including electrolyte disturbances. These imbalances can disrupt normal brain function, leading to confusion and cognitive impairment. Other choices are incorrect: A is more typical of sepsis, C is more associated with conditions like dementia, and D is not a primary cause of delirium.

Correct Answer: A

Rationale: The correct answer is A: Physical exercise. Engaging in physical exercise has been shown to improve blood flow to the brain, promote the growth of new brain cells, and enhance cognitive function. This helps maintain brain health and may reduce the risk of developing dementia. Other choices are not as directly related to brain health. B: Stimulating mental activity is important but not as effective as physical exercise in preventing dementia. C: Socialization is beneficial for overall well-being but does not have a direct impact on brain health. D: Crossword puzzles are a form of mental stimulation, but physical exercise has a greater impact on brain health.

Correct Answer: B

Rationale: The correct answer is B because social isolation is not directly related to decreased tactile sensations. A, C, and D are consequences of decreased tactile sensations in older individuals. A can occur due to not feeling the temperature, C due to not feeling pressure and injury, and D due to decreased sensation causing falls. Social isolation is more related to emotional or psychological factors rather than physical sensations. It is crucial to differentiate between physical consequences and social consequences when considering the effects of decreased tactile sensations in older individuals.