Answer:
Option C, motility
Step-by-step explanation:
Enteric nervous system (ENS) is essential for the motility of esophagus, stomach, small intestine and colon. The neural network of ENS controls the propulsive motility without depending on the connections with the brain or spinal cord. In other way, enteric small brain take care of specialized motility in all differentiated compartments along the digestive tract i.e from esophagus to recto-sigmoid
Hence, option C is correct