What is considered physiological night rest time?

Physiological night rest time refers to the period during which the body's natural circadian rhythms encourage rest and sleep. Typically, this time is aligned with the darkest hours of the night when melatonin levels peak, signaling the body to wind down and prepare for sleep.

The correct choice indicates a time window that aligns well with these natural rhythms, establishing a regular timeframe in which the majority of individuals can expect to experience optimal sleep quality and restoration.

The options that do not align as well with physiological expectations either start too early or finish too late, which could disrupt the natural sleep cycle. In particular, the chosen answer covers a broad span of night that corresponds with the majority of human sleep patterns, thus making it the best representation of physiological night rest time.