Final answer:
Nurses primarily select nursing responses when dealing with nursing diagnoses, collaborative problems, and medical diagnoses. Nursing responses are actions based on patients' needs identified through assessment.
Step-by-step explanation:
When dealing with nursing diagnoses, collaborative problems, and medical diagnoses, nurses primarily select C) Nursing responses. Nurses assess patients to identify nursing diagnoses, which are statements about the patient's response to actual or potential health conditions or needs. The role of the nurse is to develop a care plan based on these assessments to address the identified needs. This care plan may include interventions that are independent nursing actions as well as collaborative interventions that involve working with other healthcare professionals, such as physicians, to ensure comprehensive care. Unlike medical diagnoses, which are made by physicians and identify a specific disease or condition, nursing diagnoses focus on the patient's response to that condition and are the basis for selecting nursing-action-driven interventions.