The process that propels children in the direction of physical and sexual maturity is called

The process in which a learned response that has been extinguished suddenly reappears on its own with no retraining is called ______

a. a reaction formation c. spontaneous recovery b. generalization d. discrimination

Monozygotic is to _________ as dizygotic is to ______

a. identical; fraternal b. identical; congenital c. fraternal; identical d. multiple; single