Correct Answer: B

Rationale: The correct answer is B: Macule. A macule is a flat, nonpalpable skin lesion that is smaller than 1 cm in diameter. In this case, the lesion is less than 0.5cm, fitting the description of a macule. A papule (choice A) is a solid, elevated lesion less than 0.5 cm in diameter. A nodule (choice C) is a solid, elevated lesion that is 0.5 cm or larger in diameter. A tumor (choice D) refers to a mass of abnormal tissue growth, which is not applicable in this scenario.

Correct Answer: B

Rationale: The correct instruction for a client with home oxygen therapy is to keep oxygen tubing away from heat sources to prevent fires and other hazards. Option A is incorrect because adjusting the oxygen flow rate without healthcare provider guidance can be dangerous. Option C is incorrect as synthetic fabrics can generate static electricity, which is a fire hazard. Option D is incorrect as oxygen should be left on as prescribed unless advised otherwise.

Correct Answer: B

Rationale: An immunization functions as part of acquired immunity. Acquired immunity involves the production of antibodies after immunization, which helps protect against future infections. Natural immunity is not induced by immunization but is present from birth. Passive immunity is temporary and acquired through the transfer of pre-formed antibodies. Cell-mediated immunity is a type of immune response that involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

Correct Answer: A

Rationale: The correct answer is to use the cane on the stronger side. This instruction is important because it provides better support and balance. Placing the cane on the stronger side helps to shift weight off the weaker or injured side, reducing the risk of falls and promoting stability. Choices B, C, and D are incorrect. Using the cane on the weaker side would not provide optimal support. While ensuring the cane has a rubber tip and holding it 1-2 inches from the ground are important, they are not as crucial as using the cane on the stronger side for proper support and balance.

Correct Answer: C

Rationale: The correct answer is C. If sterile solution splashes onto the sterile field, it is considered contaminated. Changing gloves in this situation ensures that the sterility of the dressing change is maintained. Choice A is incorrect as non-sterile gloves would introduce contaminants. Choice B is incorrect as layering gloves can increase the risk of contamination. Choice D is incorrect as covering the sterile field with a sterile drape is not the appropriate action to take in response to contamination.