A car driver's ability to navigate a familiar route while carrying on an animated conversation with passengers best illustrates the importance of

A) hypnagogic sensations.
B) REM rebound.
C) biological rhythms.
D) dual processing.

Dual processing refers to how our brain processes information both consciously and unconsciously. When a driver is able to navigate a familiar route while carrying on a conversation, they are able to do so through automatic processing (unconscious) for the familiar driving task while also using controlled processing (conscious) for the conversation. This illustrates the importance of dual processing.