Final answer:
A checklist is the best tool for a nurse to make sense of a patient's multiple medical diagnoses, assessment findings, and medications.
Step-by-step explanation:
The best tool that a nurse can use to make sense of a patient's multiple medical diagnoses, assessment findings, and medications is a checklist. A checklist helps ensure that all relevant information is considered and accounted for, reducing the chance of errors or omissions. By reviewing the checklist, the nurse can cross-reference medical diagnoses, assessment findings, and medications to identify potential interactions or complications.