The following scenario illustrates which of the following concepts?Marcia is sixteen. She has been menstruating for several years. She is as tall as her mother and looks like a grownup but is not one.

Adolescence is the period between childhood and adulthood. Marcia has experienced physical changes associated with puberty and may look grown, but at sixteen she is still not an adult. The scenario illustrates adolescence, not puberty alone, which refers specifically to the biological changes of sexual maturation.

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