Question

Janice and Jenny are mother and daughter. Janice is much more alert early in the morning, and her teenage daughter is much more alert late

in the evening. Their differing alertness levels throughout the day are attributed to which of the following?
O circadian rhythms
O sleep cycles
O personalities
O brain plasticity
O levels of acetylcholine

Answer 1

Answer: circadian rhythms

if you're unsure, i think answers 1 and 2 are the best bets