Shane likes to get all of his studying done at once. One time he studied for almost four hours straight. Sometimes, though, he finds that he can't remember everything that he's studied. What should Shane do if he wants to better retain the information he studies?
A.
set at least five goals for his study time
B.
finish studying the most rigorous subjects first
C.
eat small snacks while he studies
D.
take short breaks every so often