The adolescent continues to develop self-concept and self-esteem. What is most important to a teen's self-esteem?

A. At 12 months, the infant walks independently: Most infants begin walking independently between 12 and 15 months of age, but it's not typically achieved by 12 months.
B. At 7 months, the infant sits alone with some use of hands for support: This is an accurate statement. By around 6 to 8 months, infants develop the ability to sit unsupported, although they may still use their hands for balance.
C. At 9 months, the infant crawls with the abdomen off the floor: Crawling typically begins between 7 and 10 months, but the abdomen may still be close to the floor initially.
D. At 1 month, the infant lifts and turns the head to the side in the prone position: This is an accurate statement. Newborns typically exhibit head control and turning movements when placed on their stomachs (prone position) by around 1 month of age.

E. At 2 months, the infant rolls from supine to prone to back again: Rolling from supine to prone and back may begin around 4 to 6 months, but it's less likely to occur at 2 months.

A. Menarche

Menarche refers to the onset of menstruation, typically occurring around 12 to 13 years of age, although it can vary widely.

B. Thelarche

Thelarche is the development of breast buds, which usually occurs around 8 to 13 years of age in girls, marking the beginning of breast development and the first sign of puberty.

C. Tanner stage 5

Tanner stage 5 refers to the final stage of sexual maturity in the Tanner Scale, characterized by adult breast development and pubic hair distribution. It is not typically used to describe the initial appearance of breast buds.

D. Puberty

Puberty is the period of development during which sexual maturity is attained, including physical changes such as growth spurts, development of secondary sexual characteristics, and

reproductive capacity. Thelarche is an early sign of puberty, but it does not encompass the entire puberty process.