Imagine that a person is hiking at a certain location and is waiting for a geyser to erupt. The person wants to take a photo of the geyser while it is active. The person knows that once the geyser erupts, it will stop in 5 minutes.
1. What type of schedule is this?
a. fixed ratio
b. variable ratio
c. fixed interval
d. variable interval
e. fixed duration
f. variable duration
