(a) Vinegar (b) Lemon juice
(c) Baking soda (d) Caustic soda
Option (c) is the answer.
Baking soda is a base that neutralizes excess stomach acid and relieves indigestion caused by overeating.
The discomfort caused by indigestion due to overeating can be cured by treating:
The discomfort caused by indigestion due to overeating can be cured by treating: