Neighborly insurance company and ollie put their agency agreement into a written document that describes the rights and duties of both parties. ollie, as the agent, has
a. apparent authority.
b. equal authority.
c. express authority.
d. implied authority.

Based on the scenario,  ollie, as the agent, has C. Express authority
Express authority is a form of authority that given by an entity into specific person whether in orally or in writing.
With this, the agent could act or make a statement as a delegation of the entity that he/she is representing