Which of the following options comprises the four chambers in the digestive tract of ruminating animals?

Ruminants are animals with a digestive system that allows them to ferment and digest plant-based foods like grasses and leaves.

The rumen is a large, muscular chamber designed to ferment and break down tough, fibrous plant material. The rumen microorganisms play an important role in this process, breaking down plant material and producing volatile fatty acids that the animal can absorb and use for energy.

After the food has been partially digested in the rumen, the animal returns it to its mouth and chews it for a longer period of time before swallowing it again. This process, known as "chewing the cud," allows the animal to further break down the plant material and extract more nutrients from it.

The cud then returns to the rumen for further digestion and fermentation before entering the small intestine for nutrient absorption.