Jill is using a technique known as Spaced Repetition. In this technique, the learner studies in short periods with great frequency over a long period of time, frequently testing herself along the way. This aids in long-term retention for the learner.
The opposite of this technique would be cramming, also known as block learning. Spaced Repetition is widely accepted as the superior study technique.
Answer:
The answer is B. being available for use at any time of the night.
It should be b) perihelon !!
it describes things in orbit closest to the sun
