Correct option is A
In ruminant animals like cows, sheep, and goats, the process by which microorganisms break down cellulose and complex carbohydrates in the rumen (the largest stomach compartment) is known as rumen fermentation.
Breaks down cellulose, hemicellulose, and other plant fibers.
Provides energy and also synthesizes proteins and vitamins for the animal.
Involves bacteria, protozoa, and fungi living symbiotically in the rumen.
Absorption: This refers to the uptake of nutrients from the digestive tract into the bloodstream.
Peristalsis: It is the muscular movement of the digestive tract that moves food along.
Excretion: Refers to the elimination of waste products.