Employees at Smith's Club, a discount grocery chain, know that they have to stay on their toes at all times. Mr. Smith, the company founder, has been known to put on disguises and make unannounced visits to stores to make sure the staff is treating customers politely. This is an example of: a. a variable ratio schedule.
b. continuous reinforcement.
c. a variable interval schedule.
d. a fixed interval schedule.
e. a fixed ratio schedule.

c. a variable interval schedule.

Explanation:

A variable interval schedule is the schedule in which the particular time amount would be passed i.e. non-predictable and this time amount would be changed or varies

Here in the given situation since it is mentioned that there is  unannounced visits in order to check whether the staff is treating their customers in a polite way or not

Therefore the correct option is c.

the answer is d

explanation:

the interest will be $59.71

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