The most essential nutrient for life is ______

Correct Answer: D

Rationale: The correct answer is D: Water. Water is the most essential nutrient for life as it plays a crucial role in various bodily functions such as hydration, nutrient transportation, temperature regulation, and waste removal. Without water, the body cannot survive for more than a few days. Proteins, fats, and carbohydrates are also essential nutrients, but water is the most vital for sustaining life. Protein is important for growth and repair, fats provide energy and support cell function, and carbohydrates are a primary energy source. However, none of these nutrients are as essential as water for overall survival and well-being.

Correct Answer: C

Rationale: The correct answer is C: Women have a shorter urethra. This is because women have a shorter urethra compared to men, which makes it easier for bacteria to travel up the urinary tract and cause infections. The shorter distance allows bacteria to reach the bladder more quickly, increasing the likelihood of urinary tract infections. Incorrect choices: A: Women's gonads having different gonads is irrelevant to the likelihood of urinary tract infections. B: Women's kidneys not filtering blood properly would lead to other health issues, not specifically urinary tract infections. D: Women having urinary incontinence is a separate issue from the increased likelihood of urinary tract infections in women.

Correct Answer: D

Rationale: The correct answer is D because as people age, the skin naturally becomes thinner and more fragile due to a decrease in collagen and elastin production. This leads to issues like increased susceptibility to bruising and slower wound healing. A is incorrect as the amount of fat and collagen actually decreases with age. B is incorrect as pressure injuries are not a normal age-related change but can occur due to factors such as immobility. C is incorrect as hair tends to thin and become less dense with age, rather than thickening.

Correct Answer: B

Rationale: The correct answer is B: In the morning. Elastic stockings should be applied in the morning because that's when the legs are least swollen, ensuring proper fit and effectiveness throughout the day. Applying them in the evening may lead to discomfort as legs may be more swollen by then. Mid-afternoon and after exercising are not ideal times as the legs may be more fatigued, making it harder to apply the stockings properly.

Correct Answer: B

Rationale: The correct answer is B: Open fracture. An open fracture involves the skin being broken, allowing the bone to protrude through the skin. This poses a high risk of infection due to exposure of the bone to the external environment. Closed fractures (A) do not involve any break in the skin. Greenstick fractures (C) are incomplete fractures commonly seen in children. Compression fractures (D) occur when bones are crushed, often seen in the spine. Therefore, an open fracture best describes a fracture with an open wound and bone protrusion.