Answer :

In a variable ratio schedule, the number of times a behavior must occur before it is rewarded changes over time. This option (D) is correct.

What is Variable?

Variable refers to that keeps on changing in the given due course of time. This kind of cost is directly proportionate to the production of the goods and services. The variability in such of cost depends upon the goods produced.

The amount of times a behavior may occur before it is acknowledged changes over time in a variable ratio schedule. Therefore, it can be concluded that  option (D) is correct.

Learn more about variable ratio schedule here:

https://brainly.com/question/15702305

#SPJ4

Your question is incomplete, but most probably the full question was….

List of options:-

A) fixed interval schedule

B) variable interval schedule

C) fixed ratio schedule

D) variable ratio schedule

E) compressed work schedule