The stage of aging that corresponds to 21- to 35-year-olds is called
a. adolescence.
b. young adulthood.
c. middle adulthood.
d. older adulthood.

The correct answer is: B: young adulthood.

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.