According to the Theory Behind the Region of Proximal Learning

Multiple Choice

According to the theory behind the region of proximal learning, we should:

A) allocate study to items which have not yet received study time.
B) allocate study to the most difficult items in the set.
C) allocate study time not to easy items that we have already mastered nor to the extraordinarily difficult items, but to learnable items, only which have not yet been learned.
D) allocate study time to the most easy items initially and then gradually to more difficult items as we warm up to the study task.