QUESTION $9$

Based on the theory that sleep is important because of the role it plays in information consolidation, which of the following plans is a bad idea?

a$.$ Meredith's plan to pull an all$-$nighter studying for her Chinese exam

b$.$ Clarice's plan to go hiking in the woods at night

c$.$ Ryan's plan to watch a late$-$night talk show on TV the night before competing in a tough wrestling match

d$.$ Pedro's plan to go on a late$-$night pizza run