Final answer:
The physician is using the CDSS to find the latest information on clinical trials and new chemotherapies for a rare type of cancer, aiding informed decision-making for patient treatment.
Step-by-step explanation:
The physician is using the Clinical Decision Support System (CDSS) as a tool to access the latest information on clinical trials and new chemotherapy treatments for a rare type of cancer. This use of the CDSS demonstrates the system's capacity to aid in informed decision-making by providing updated medical data and evidence-based treatment options that can potentially improve patient outcomes. By utilizing the CDSS, the physician can quickly analyze a vast amount of medical literature and clinical guidelines to identify the most appropriate treatment plan for the patient.