Correct Answer: C

Rationale: According to Fiedler's Contingency Theory, task-motivated managers are most effective under highly structured situations. This is because in such environments, where priorities are clear and tasks are well-defined, task-oriented managers can excel in organizing and accomplishing objectives efficiently. Choices A and B are incorrect because the effectiveness of a task-motivated manager is not solely linked to stress levels but rather to the structure of the situation. Choice D is also incorrect as a loosely structured situation would not provide the clarity and direction that a task-motivated manager thrives in.

Correct Answer: B

Rationale: The correct answer is B: 'Use lateral communication.' When giving directions to subordinates, it is important to know the context of the instructions, get positive attention, verify feedback, and give follow-up communication. Lateral communication refers to communication between individuals or groups on the same organizational level, which is not directly related to giving directions to subordinates. Choices A, C, and D are important techniques that help ensure effective communication with subordinates.

Correct Answer: A

Rationale: The correct answer is A: Confirmation. In the diffusion of innovations theory by Rogers, the confirmation stage seeks reinforcement of the action taken. In this scenario, after implementing the course of action regarding shift changes, the decision was reviewed and found inappropriate, aligning with the confirmation phase. Choice B, 'Implementation,' refers to putting the plan into action, which had already been done. Choice C, 'Knowledge,' pertains to becoming aware of the innovation, not evaluating its effectiveness. Choice D, 'Persuasion,' involves efforts to influence individuals to adopt the innovation, not verifying its appropriateness.

Correct Answer: D

Rationale: Cultural diversity presents an important challenge to nurse managers due to the increase in cultural diversity seen both in the patient population and the nursing staff. This challenge requires nurse managers to ensure that their nursing staff can effectively communicate and provide culturally competent care to patients from diverse backgrounds. Choice A is incorrect because it does not directly relate to the impact of cultural diversity. Choice B is incorrect as it focuses on the training of staff nurses rather than the overall challenge of managing cultural diversity. Choice C is incorrect as the percentage of nursing staff from minority groups, while important, is not the primary reason cultural diversity poses a challenge to nurse managers.

Correct Answer: C

Rationale: The most effective strategy for reducing medication errors on a nursing unit is using barcoding technology for medication administration. Barcoding technology helps to ensure the right medication is given to the right patient in the right dose at the right time. Increasing the nurse-to-patient ratio (choice A) may help in preventing errors due to workload, but it may not address the root cause of medication errors. Providing ongoing education (choice B) is important but may not be as effective as implementing technology to directly prevent errors during administration. Increasing the use of PRN medications (choice D) can actually increase the risk of errors if not carefully monitored and controlled.