Correct Answer: D

Rationale: Epidemiological studies are used by community health nurses to identify the health needs of a population. These studies involve investigating patterns, causes, and effects of health and disease conditions in defined populations. While health surveys, medical records, and patient interviews are valuable tools in healthcare, epidemiological studies provide a broader population-based perspective essential for understanding and addressing community health needs.

Correct Answer: C

Rationale: The correct answer is C: Lack of enjoyment in usual pleasures. Anhedonia is the inability to feel pleasure in normally pleasurable activities. Choice A, reports of difficulty falling and staying asleep, is more indicative of insomnia rather than anhedonia. Choice B, expression of persistent suicidal thoughts, is related to suicidal ideation and not anhedonia. Choice D, reduced senses of taste and smell, is more associated with disturbances in the sense of taste and smell, not anhedonia.

Correct Answer: D

Rationale: To be effective as an occupational health nurse, having knowledge and skills in public health science, the research process, interviewing and counseling, and oral and written communication are all important. However, communication skills, both oral and written, are crucial for conveying information, educating employees, documenting findings, and collaborating with other healthcare professionals. While public health science, research process, interviewing, and counseling are essential, oral and written communication is fundamental for effective communication and coordination in the workplace, making it the most critical skill for an occupational health nurse.

Correct Answer: B

Rationale: The correct answer is 'B: researcher.' In this context, the individual is primarily involved in developing research questions, conducting research, and disseminating findings, which aligns with the responsibilities of a researcher. Choice 'A: manager' is incorrect because the role described does not primarily involve managerial duties. Choice 'C: clinician/practitioner' is also incorrect as the focus is on research activities rather than direct clinical practice. Choice 'D: health promotion specialist' does not encompass the full scope of responsibilities described in the scenario.

Correct Answer: A

Rationale: The correct answer is A: 'The person, the environment or situation, and health.' In nursing theory, the paradigm includes these core components: the person receiving care, the environment or situation influencing care, and the goal of achieving optimal health outcomes. Choices B, C, and D are incorrect as they do not align with the fundamental aspects of nursing theory and its paradigm.