The correct answer is option 1: peristalsis. Peristalsis is the rhythmic contraction of the muscles in the gut lining that helps push the food along the digestive tract. It is a coordinated movement that occurs automatically and helps move the food from the esophagus to the stomach, and then through the intestines. This contraction and relaxation of the muscles create wave-like movements that propel the food forward.

Option 2 - facilitation - is incorrect as it does not relate to the movement of food in the gut.

Option 3 - guttation - is also incorrect as guttation refers to the secretion of water droplets from the leaves of plants, not the movement of food in the gut.

Option 4 states that no option is correct, but this is not the case as option 1 (peristalsis) is indeed the correct answer.