The correct answer is: A. 83% and 100%.
Merrick’s multiple piece rate system is a type of incentive wage system in which workers are paid a piece rate for each unit of output they produce. The piece rate is higher for workers who produce more units of output. Under Merrick’s system, workers whose level of performance is between 83% and 100% of the standard output are paid 120% of the ordinary piece rate.
Option B is incorrect because workers whose level of performance is between 100% and 120% of the standard output are paid 150% of the ordinary piece rate.
Option C is incorrect because workers whose level of performance is below 83% of the standard output are paid a lower piece rate than the ordinary piece rate.
Option D is incorrect because it does not specify a range of performance levels.