Thelma reasonably believes that Alice (an agent) has the authority to act on Penelope's (the principal) behalf even though Alice does not have any actual authority to do so. Thelma's belief is based on Penelope's actions and conduct. In this circumstance, Alice has: a. No authority b. Express authority c. Apparent authority d. Implied authority

Apparent Authority (also called "ostensible authority") relates to the doctrines of the law of agency. It is relevant particularly in corporate law and constitutional law.

Apparent authority refers to a situation where a reasonable third party would understand that an agent had authority to act. This means a principal is bound by the agent's actions, even if the agent had no actual authority, whether express or implied. It raises an estoppel because the third party is given an assurance, which he relies on and would be inequitable for the principal to deny the authority given. Apparent authority can legally be found, even if actual authority has not been given.

Therefore, we can conclude that the correct option is C.

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