What document must be provided by the inspection agent upon entering a business?

The correct answer is that the inspection agent must provide credentials identifying them as representing the department or board when entering a business. This requirement ensures transparency and accountability in the inspection process. By presenting official credentials, the inspection agent confirms their authority and legitimacy, allowing the business owner or staff to verify that they are dealing with an authorized representative of the regulatory body. This process is vital for maintaining trust between the authorities and the businesses they regulate, as well as ensuring that the inspection is conducted within the legal framework.

The other options, while they may seem relevant, do not fulfill the fundamental requirement of establishing identity and authority at the moment of entry. Providing a copy of the last inspection report or a list of previous violations does not establish the agent’s legitimacy. A notice of intent to audit is also not necessary at the point of entry, as the credentials serve as the primary means of identification for the inspection agent's purpose.