According to the text,adolescence is defined as

A) encompassing the years between 11 and 20.
B) puberty.
C) cognitive changes.
D) an apprenticeship.

Cognitive Changes

Modifications in mental functions such as memory, problem-solving, and attention that can occur due to aging, disease, or injury.

Apprenticeship

A system of training a new generation of practitioners of a skill under the guidance of an expert through hands-on practice and learning.

Puberty

Process by which a person attains sexual maturity and the ability to reproduce.