In work measurement terms, standard performance is defined as:

a. The rate of output which qualified workers will achieve without over-exertion as an average over a working

day provided they are motivated to apply themselves to their work

b. The rate of output which trained workers will achieve as an average over a working day provided they are motivated to apply themselves to their work

c. The rate of output which qualified workers will achieve as an average over a working day provided they are motivated to apply themselves fully during the whole day

d. The rate of output which average workers will achieve without over-exertion as an average over a working

day