The purpose of reinforcement is to ____ increase the frequency of employee behavior.

A) sometimes
B) always
C) usually
D) rarely

Wuensch Incorporated, an escrow agent, has provided the following data concerning its office expenses: Management believes that office expense is a mixed cost that depends on the number of escrows completed. Note: Real estate purchases usually involve the services of an escrow agent that holds funds and prepares documents to complete the transaction.Using the high-low method, the estimate of the variable component of office expense per escrow completed is closest to:

A) $45.44
B) $42.76
C) $88.22
D) $131.00