Concept:Overlearning is the process of continuing to practice or study a topic even after initial mastery. This extra repetition helps strengthen memory and skill, leading to better retention and performance.Explanation:When a learner keeps practicing a subject beyond the point of initial learning, it is called overlearning. This additional practice reinforces neural pathways, making recall faster and more durable. Overlearning is not the same as rote learning; it involves meaningful repetition. Research shows that overlearning prevents forgetting and improves long-term retention. Therefore, it increases the learner's proficiency in that subject. It does not decrease learning, memory, or cause disinterest; in fact, it often boosts confidence and competence.Answer:A. Increase in proficiency.