Final answer:
The median age of onset for GAD is generally in adolescence option (B). Middle adulthood, on the other hand, is not typically associated with the onset of GAD but rather with the increased risk of physical health problems and achieving major life goals.
Step-by-step explanation:
The median age of onset for Generalized Anxiety Disorder (GAD) is Adolescence option (B).
While middle adulthood, which spans from the mid-30s to the mid-60s, does bring an increased risk of health problems like type 2 diabetes, cardiovascular disease, and cancer, and is a time for raising a family and attaining career goals, it is not typically associated with the onset of GAD. Instead, research like the study by Moffitt et al. (2007) has shown that risk factors for GAD can be identified much earlier in life, with the onset often during childhood or adolescence.
Understanding GAD:
GAD is characterized by chronic anxiety, exaggerated worry, and tension, even when there is little or nothing to provoke it. It can begin at any age, but the risk is highest between childhood and middle age, and most cases start during adolescence. The exact cause of GAD is not fully understood, but a combination of genetic, environmental, psychological, and developmental factors are involved.