In an online course, the quizzes at the beginning of the course contain explicit hints that guarantee a correct response, whereas the quizzes toward the end of the course contain fewer hints. The method of withdrawing hints illustrates

errorless discrimination training.

Explanation:

Errorless discrimination training is a term that describes a form of training that intend to limit the number of errors to the barest minimum. Often times, it is a gradual process of training, that aims to reduce the errors and the hostile effects that comes with the error.

Firstly introduced by Charles Festers, an american behavioural psychologist, in 1950s, errorless discrimination training is applicable in applied psychology, which is used in improving memory-impaired person, to learn in an efficient manner.