The correct option is B Refractory period
The term "refractory period" may refer to the recovery time of an excitable membrane to be ready for a second stimulus once it returns to its resting state, following excitation.
Incubation period - the period over which eggs, cells, etc. are incubated.
Gestation Period - The unborn baby spends around 38 weeks in the uterus, this period is called the gestation period