This known period lasts from 20 to 40 years depending on how these stages, ages, and tasks are culturally defined. Select one: a. Middle adulthood b. Early adulthood c. Late adulthood d. None of the above

A. Middle adulthood

Explanation:

Traditionally, middle adulthood is a period of maturing, after the naive and indolent years of youthfulness and early adulthood. At this moment of life, the person began to seek stability in his or her life, attempting to secure the future, and avoiding problems and excessive behaviors.

explanation:

may i ask what challenges?

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.