Final Answer:
The median age of onset for Generalized Anxiety Disorder (GAD) is typically around 30 years old. Option B is the answer.
Step-by-step explanation:
The onset of Generalized Anxiety Disorder (GAD) is often observed in early adulthood, with a median age around 30 years. GAD is characterized by persistent and excessive worry about various aspects of life, and it can manifest in physical symptoms such as muscle tension, restlessness, and fatigue. While individuals may experience symptoms at different ages, the median age provides a general understanding of when GAD symptoms commonly begin.
The options provided (20, 30, 35, 40 years old) reflect potential ages, but research and clinical observations suggest that the median age of onset for GAD tends to cluster around 30 years old.
Option B is the answer.