According to this theory, sleep is necessary for growth and repair of the body

The earliest age at which fetal habituation has been observed is ______ weeks' gestation.

a. 16 b. 25 c. 32 d. 37 e. 39

__________is a schedule of reinforcement in which every correct response is reinforced

A) Fixed-ratio reinforcement B) Partial reinforcement C) Continuous reinforcement D) Variable-ratio reinforcement E) Select