Entrainment Refers to the Fact That

Multiple Choice

Entrainment refers to the fact that:

A) we experience a series of distinct states of consciousness during the day that predictably follow one another.
B) our biological rhythms are synchronized with external events such as temperature and daylight.
C) our biological rhythms are internally generated and synchronized by the beating of our heart.
D) a person can be trained to control biological rhythms and to change them when necessary.