If a firm is making $0 profit will they stay in the market or exit? Explain as if I were someone that had never taken this class.

A76-year old female with degenerative joint disease made an appointment with an orthopedic surgeon. the patient stated she has had severe pain in her right knee for six months. she has tried physical therapy and steroid injections but has not had any relief. the surgeon has agreed to schedule a right total knee arthroplasty (knee replacement).