Start typing, then use the up and down arrows to select an option from the list.
Multiple Choice
Eventually, everyone must sleep due to our
A
need for mental rest.
B
delta waves.
C
beta waves.
D
biological rhythms.
2:38m
Watch next
Master To Sleep, Perchance to Dream: Crash Course Psychology #9 with a bite sized video explanation from CrashCourse
Start learningRelated Videos
Related Practice
© 1996–2023 Pearson All rights reserved.