Which organ in the human digestive system is responsible for the formation of solid waste and the final absorption of water?

Large intestine

The large intestine, also known as the colon, is the final section of the digestive tract where it processes indigestible food matter and houses trillions of beneficial bacteria. These bacteria play a crucial role in health by producing essential vitamins like Vitamin K and B12. Interestingly, while it is called 'large' because of its width, it is actually much shorter than the small intestine, measuring about five feet compared to the small intestine's twenty feet.