Answer:
c. Gastroesophageal reflux
Explanation:
Gastroesophageal reflux Disease (GERD) is a long-term condition that occurs due to inadequate closure of the lower esophageal sphincter.
Heartburn, also called acid indigestion, is the most common symptom of GERD and usually feels like a burning chest pain beginning behind the breastbone and moving upward to the neck and throat. Many people say it feels like food is coming back into the mouth leaving an acid or bitter taste.
Doctors recommend lifestyle and dietary changes for most people needing treatment for GERD.