Final answer:
Using singular measures to assess phenomena limits the depth of nursing research.
Step-by-step explanation:
The action or strategy that limits the depth of nursing research is using singular measures to assess phenomena.
Singular measures refer to using only one method or approach to gather data in a research study.
While using a single method may provide some information, it may not capture the full complexity of the research question and may limit the depth of understanding that can be achieved.
It is important for nursing research to incorporate a broad range of methodological approaches to address and eliminate health disparities and provide a solid framework for analyzing predicted and unpredicted data.
correct option d. Using singular measures to assess phenomena.