Correct Answer: A

Rationale: The correct answer is to Evacuate the client (Choice A). In the event of a fire, the safety of the client is the top priority. The RACE (Rescue, Alarm, Contain, Extinguish) mnemonic is used in fire emergencies. The first step is to Rescue or Evacuate the individual from immediate danger. Attempting to extinguish the fire (Choice B) may endanger both the client and the nurse. Calling the fire department (Choice C) is important but should come after ensuring the client's safety. Closing the door to contain the fire (Choice D) is not appropriate in this scenario because the priority is to remove the client from harm's way.

Correct Answer: B

Rationale: Measuring the client's oxygen saturation level is the most important assessment in this scenario. Oxygen saturation level reflects how well the client is oxygenating, which is crucial in assessing the effectiveness of oxygen therapy for a client with COPD. Monitoring the respiratory rate and effort (Choice A) is important but assessing oxygenation with saturation levels takes precedence. While arterial blood gas levels (Choice C) provide comprehensive information, checking oxygen saturation is a quicker and more immediate way to assess oxygenation status. Checking blood pressure (Choice D) is not the priority when evaluating the effectiveness of oxygen therapy in COPD.

Correct Answer: A

Rationale: The correct answer is A. A 16-year-old who is married can legally sign an informed consent form. In this case, being married at 16 may indicate legal emancipation or the ability to consent to medical treatment. Choice B is incorrect because having schizophrenia doesn't automatically imply incapacity to provide informed consent. Choice C is incorrect as an adoptive parent does not have the legal authority to provide consent for medical treatment on behalf of a child without proper documentation. Choice D is incorrect as a 17-year-old mother would generally not have the legal capacity to give consent for her toddler, as parental consent is usually required for minors.

Correct Answer: B

Rationale: When a patient uses an in-the-canal hearing aid, cerumen buildup is a critical issue that needs to be regularly assessed. Cerumen can easily block the sound passage and affect the functionality of the hearing aid. Assessing and managing cerumen buildup is a priority to ensure the proper functioning of the hearing aid. Eyeglass usage, type of physical exercise, and excessive moisture problems are not directly related to the specific issue of cerumen buildup in in-the-canal hearing aids, making them lower priority assessments in this context.

Correct Answer: B

Rationale: A fracture near the epiphysis can result in retarded bone growth, so this should be communicated to the parents.