Which digestive organ churns food with muscular contractions and also contains strong acid?StomachLarge IntestineOesophagus Small intestine

The digestive organ that churns food with muscular contractions and contains strong acid is the Stomach.

Explanation:

1. Function of the Stomach: The stomach is primarily responsible for the mechanical and chemical digestion of food. It mixes food with gastric juices, which contain strong hydrochloric acid (HCl). This creates a highly acidic environment that helps break down food particles and kill potentially harmful bacteria.

2. Muscular Contractions: The muscular walls of the stomach perform churning motions through a process known as peristalsis, which helps to further digest food and mix it well with the digestive juices.

3. Acidity: The strong acid in the stomach helps to denature proteins and activate digestive enzymes, essential for the breakdown of food before it moves into the small intestine for further digestion and nutrient absorption.

Thus, the correct answer is the Stomach.