Memory Improvement Techniques

Timely revision brings previously learned information back to mind and gives the learner a chance to identify weak areas. Spaced review and practice can strengthen recall more effectively than leaving all study until the last moment. Revision may also improve preparedness and reduce avoidable worry, although it cannot guarantee perfect memory. Thus, option A is correct.

Learning is not finished when reading stops. During adequate sleep, the brain processes and consolidates some newly learned information, helping later recall and attention. Sleep cannot replace study, and its effect is not that it always destroys memory. Therefore C gives the accurate relationship between sleep and memory.