What effect does caffeine have on the sleep cycle

Because caffeine is a stimulant, most people use it after waking up in the morning or to remain alert during the day. While it is important to note that caffeine cannot replace sleep, it can temporarily make us feel more alert by blocking sleep-inducing chemicals in the brain and increasing adrenaline production.

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

i do not know and i have a 100 in this class