Standards that represent levels of operation that can be attained with reasonable effort are called a. ideal standards b. theoretical standards c. normal standards d. variable standards

Answer: c. Normal standards

Step-by-step explanation:-

Normal standards represent the average standard levels of performance that can be attainable during a future period (for relatively a long period covering one business cycle) of expected operation conditions.

Hence, Standards that represent levels of operation that can be attained with reasonable effort are called normal standards.