REM sleep is paradoxical because during this period of sleep
A. the brain is active but the major muscles of the body appear paralyzed.
B. the skeletal muscles remain active, but the brain is inactive.
C. both the brain and the body are inactive.
D. the brain is less active than it is during other sleep stages.
Answer: A
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A. Urie Bronfenbrenner. B. Jean Piaget. C. Lev Vygotsky. D. Noam Chomsky.