Most girls complete growth in body size by about ______ years of age and most boys by about ______ years of age.

During adolescence,

A) thought and language expand at an astounding rate. B) young people begin to master academic knowledge and skills. C) young people fully assume adult roles. D) thought becomes abstract and idealistic.

Having a general feeling that things will be okay and problems will eventually work out is known as

a. internal control b. optimism c. learned helplessness d. hardiness