Professor Den Hartog Advises His Class to "Get a Good

Professor Den Hartog advises his class to "get a good night's sleep" prior to midterm examination.How will this help Professor Den Hartog's students with test performance?

A) If they sleep with the books under their pillows,they will subliminally retain small amounts of information.
B) They may actually dream about some of the answers to test questions.
C) Any information visually processed can be imprinted in the brain,similar to photographic memories.
D) REM sleep facilitates consolidation of newly learned material.