Answer:
The answer is: D) inseparability
Step-by-step explanation:
Inseparability in marketing means that you can't separate the production of the service from its consumption.
In other words, the doctor who offers the service comes together with the service he offers.
The doctor may have treated Sean's health issues in a correct manner and probably helped to cure Sean, but if Sean doesn't like the doctor then he will not return. Sean can not separate the doctor form the service he delivers.