Sputum collection, wrong

Correct Answer: B

Rationale: The correct answer is B: Clear and light sample. This is because sputum should ideally be clear and light in color, indicating a lower presence of mucus and other contaminants. A cloudy, thick sample (choice A) may indicate an infection or presence of pus. Choices C and D are likely left blank as they are irrelevant or incorrect responses. In summary, a clear and light sputum sample is preferred for accurate testing and diagnosis.

Correct Answer: B

Rationale: The correct answer is B because a vesicle is a small fluid-filled blister on the skin. Vesicles are commonly caused by friction, burns, or insect bites, resulting in fluid accumulation beneath the skin. Pus is typically associated with larger, infected lesions such as pustules, not vesicles. Choice C and D are likely incorrect as they do not provide relevant information or support for the appearance of a vesicle on the leg.

Correct Answer: B

Rationale: The correct answer is B: Universal Serial Bus. USB is a common interface used to connect devices to a computer. Nursing informatics often involves using various devices that connect via USB. Choice A, Updated System Binary, is incorrect as it does not accurately describe USB. Choices C and D are blank options, making them obviously incorrect. In summary, USB stands for Universal Serial Bus, a widely used interface in nursing informatics for connecting devices to computers.

Correct Answer: A

Rationale: The correct answer is A because in a warm environment, the body needs to cool itself to maintain a stable internal temperature. This process is called thermoregulation. Sweating and vasodilation are mechanisms the body uses to release heat and cool down. Choice B is incorrect as the body does not need to warm itself in a warm environment. Choices C and D are incomplete and do not offer a logical explanation related to the situation given.

Correct Answer: B

Rationale: The correct answer is B: 12 feet. This distance is established to prevent fires as oxygen supports combustion. Smoking within 12 feet of oxygen administration poses a significant fire hazard. Choice A (4 meters) is incorrect as it is greater than 12 feet. Choices C and D are incorrect as they do not provide a specific distance requirement.