Messaging Transpiring Only at Certain Times of the Year Because

Multiple Choice

Messaging transpiring only at certain times of the year because of the seasonal nature of an issue (or product) such as selling snow blowers, selling Cadbury Easter eggs, and recruiting volunteers to work at various summer festivals is what type of scheduling?

A) Flighting
B) Continuous
C) Pulsing
D) Intermittent
E) Sporadic.