Answer:
c. labor efficiency variance.
Step-by-step explanation:
The labor efficiency variance can be regarded as variance that is been based on the quantity of labor hours that is been used in production. It is the difference that exist between actual number of direct labor hours that one worked as well as the budgeted direct labor hours that is required to have worked based on the standards.
It should be noted that the difference between the actual labor rate multiplied by the actual labor hours worked and the standard labor rate multiplied by the standard labor hours is the labor efficiency variance.