Answer:
What really guarantees successful transparency in physician-patient communication is giving a patient copies of the results of all the tests done to diagnose a medical issue.
Explanation:
The doctor-patient relationship must be based on trust, transparency and sincerity. It is the physician's responsibility to inform the patient about his state of health, including the precise diagnosis and recommended treatment. All this information is preserved and guaranteed by medical secret.
The information obtained from the tests and trials, as well as the established diagnosis, is of interest to the patient and as such should be known.
The other options are not correct because: