Liz is a 70-year-old woman who has developed an irrational fear of open, crowded places and avoids leaving her home. This fear began after Liz lost her husband. In this scenario, Liz suffers from _____.

A) ergophobia
B) chionophobia
C) agoraphobia
D) algophobia

Liz's symptoms of an irrational fear of open, crowded places and avoiding leaving her home are characteristic of agoraphobia. This condition often involves fear of being in situations where escape might be difficult or help wouldn't be available if things go wrong.