Adolescence extends from

A) the beginning of concrete operations to the end of formal operations.
B) 12 to 15 years of age.
C) the beginnings of sexual maturity to independent adulthood.
D) the beginning to the end of the growth spurt.

Adolescence is typically defined as the period of development between the beginnings of sexual maturity to independent adulthood. This period can vary depending on cultural, social, and biological factors, but generally includes the teenage years and early twenties. Choice A refers to a stage of cognitive development, not adolescence. Choice B is too narrow of a time frame to encompass the full range of adolescent development. Choice D describes a physical aspect of adolescence, but does not encompass the entirety of this developmental period.