Final answer:
Agoraphobia is the anxiety disorder described as having a persistent fear of situations where escape is difficult, affecting daily life and leading to avoidance of certain places.
Step-by-step explanation:
The anxiety disorder characterized by a marked and persistent fear of being in places or situations from which escape may be difficult or embarrassing is known as agoraphobia. Individuals with agoraphobia often avoid public spaces, travel, and crowds, fearing they may have a panic attack or other embarrassing situation from which they cannot easily escape. The prevalence of anxiety disorders in the U.S. highlights the importance of understanding the distinction between normal feelings of anxiety and actual anxiety disorders that can significantly impact a person's daily life.