Answer: C) Moving a bolus to the posterior wall of the pharynx
Step-by-step explanation:
Moving of a bolus is a feature of pharynx. It is a component used or oral phase of swallowing. It helps in starting the primary peristalis, helps in epiglottis back so as to cover the larynx.
The bolus is moved backward towards the esophagus these are the involuntary components of the esoaphagus and pharyngea aids in swallowing.