Skin care, correct

Correct Answer: B

Rationale: The correct answer is B: Leave the pimple. Pinching a pimple can lead to inflammation, scarring, and further spread of bacteria. Leaving the pimple allows it to heal naturally, reducing the risk of complications. It is important to practice gentle skincare to promote healthy skin and avoid causing damage or irritation. Other choices are incorrect as they involve actions that can harm the skin and worsen the condition.

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: Intact skin. Intact skin acts as the first defense against infection by forming a physical barrier that prevents pathogens from entering the body. It is composed of multiple layers, including the epidermis and dermis, which provide protection against microbes. Skin also produces antimicrobial substances and has immune cells that can defend against pathogens. A: Skin is not specific enough, as damaged skin may not provide effective protection. C and D are incomplete answers and do not accurately describe the primary role of intact skin in defending against infections.

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.