Final answer:
The statement is true: each patient has one or more patient histories which belong to one and only one patient.
Step-by-step explanation:
The statement 'Each patient has one or more patient histories' is True. Patient histories are a record of a patient's medical information, including past illnesses, treatments, surgeries, and other relevant data. Each patient can have multiple patient histories that document their medical journey.
Additionally, the statement 'Each patient history belongs to one and only one patient' is also True. Patient histories are uniquely linked to a specific patient and cannot be shared or transferred to another patient.