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

A. An anxiety reaction: The toddler's behavior of sitting quietly, sucking her thumb, and turning away from the nurse when approached after her mother leaves the room suggests anxiety. These

behaviors are common signs of distress or discomfort in young children, especially when separated from their primary attachment figure (in this case, the mother).

B. Regression: Regression involves reverting to earlier, more immature behaviors in response to stress or discomfort. While thumb sucking can be considered a form of regression, the behavior observed in this scenario is more indicative of anxiety rather than a broader regression in

developmental milestones.

C. Resentment toward the mother: There is no evidence in the scenario to suggest that the toddler is expressing resentment toward the mother. The behaviors observed are more likely related to

the child's emotional response to separation and hospitalization.

D. Developing autonomy: Developing autonomy typically involves asserting independence and exploring one's environment. The behaviors observed in the scenario are more indicative of anxiety and distress rather than autonomous behavior.

A. Eruption of the last four molars: This characteristic typically occurs during adolescence but may vary individually. However, it is not universal among all teenagers and does not apply to both genders equally.

B. Increased shoulder, chest, and hip widths: During adolescence, both boys and girls experience growth spurts, leading to increased shoulder, chest, and hip widths as part of their overall physical development.

C. Decreased respiratory rates of 15 to 20 breaths per minutE. Respiratory rates in teenagers generally remain within the normal adult range, typically between 12 and 20 breaths per minute. There is no consistent decrease in respiratory rates during adolescence.

D. Fully functioning sweat and sebaceous glands: Sweat and sebaceous glands are typically fully developed and functional by adolescence. This characteristic is not specific to teenagers but applies to individuals of all ages once these glands have matured.