Awoman you know constantly avoids crowded streets and buildings, and is very reluctant to leave home, even with a friend. recently, she has experienced extreme, sudden fear every time she enters a crowded street or building. most likely, this woman would be diagnosed with:

The correct answer is agoraphobia and panic disorder. 

Agoraphobia refers to a condition wherein sufferers experience extreme and abnormal fear of open areas, crowded public spaces or open spaces. Agoraphobia is highly co-morbid with panic disorder, where individuals suffer from extreme anxiety and panic attacks when faced with real or perceived fears.   

The ceremonial column.