A normal age-related change for the circulatory system is

Correct Answer: A

Rationale: The correct answer is A: The heart pumps less efficiently. With age, the heart muscle may weaken, leading to decreased pumping efficiency. This can result in reduced cardiac output and circulation. Choice B is incorrect as blood vessels typically lose elasticity with age, making them stiffer. Choice C is incorrect because blood vessels often become less elastic and more rigid over time. Choice D is incorrect as blood flow may actually decrease due to reduced cardiac output in aging individuals.

Correct Answer: B

Rationale: The correct answer is B: With water. Cleaning an artificial eye with water is the safest and most gentle method to remove dirt and debris without damaging the delicate surface. Water is non-abrasive and helps maintain the eye's shape and integrity. Alcohol (choice A) can be too harsh and may cause damage. Toothpaste (choice C) is abrasive and not suitable for cleaning delicate surfaces. Bleach (choice D) is a strong chemical that can be harmful and should never be used near the eye. In summary, water is the best choice for cleaning an artificial eye due to its gentle and effective cleaning properties.

Correct Answer: A

Rationale: The correct answer is A: Change in diet and daily exercise. This is because lifestyle modifications such as healthy eating habits and regular physical activity have been proven to effectively prevent or delay the progression of prediabetes to type 2 diabetes. These actions help in maintaining a healthy weight, improving insulin sensitivity, and managing blood sugar levels. Medication (B) may be prescribed in some cases, but it is not the primary prevention strategy. Surgery (C) is not a standard treatment for prediabetes. Increasing intake of fluids (D) is important for overall health, but alone it is not sufficient to prevent prediabetes.

Correct Answer: A

Rationale: Passive range of motion exercises are done when a resident cannot move on her own to prevent contractures and maintain joint flexibility. Residents who can move on their own do not require passive exercises. Nursing assistants can assist, but the resident should not be actively participating. Doctors and physical therapists may prescribe, but the exercises themselves are typically performed by nursing staff under their guidance.

Correct Answer: B

Rationale: The correct answer is B because a cover letter should introduce the applicant, express interest in the job, and highlight qualifications relevant to the position. Providing reasons for seeking the job and explaining qualifications demonstrate a genuine interest and suitability for the role. Other choices are incorrect as detailed educational information and volunteer work may be included in the resume, salary expectations are discussed later in the hiring process, and recommendations are usually provided separately upon request.