A Recent Study Revealed That Children Who Had Done Most

Multiple Choice

A recent study revealed that children who had done most of their sleeping at night during infancy had higher executive function at age four. Researchers hypothesized that this happened due to:

A) sleep's role in brain maturation and memory consolidation.
B) the fact that the infants' circadian rhythms were on point.
C) the finding that the night sleeping made the infants' parents happier.
D) decreased REM sleep.