Drivers detect traffic signals more slowly if they are also talking on a cell phone. This best illustrates the impact of

A) delta waves.
B) selective attention.
C) hypnagogic sensations.
D) circadian rhythms.

Selective Attention

The mental process of concentrating on one particular piece of information while disregarding other data that can be sensed.

Circadian Rhythms

Biological processes that follow a roughly 24-hour cycle, regulating sleep, wakefulness, and numerous physiological functions in living organisms.

Delta Waves

Slow brain waves typically associated with the deepest stages of sleep and relaxation.