Which of the following is indicative of maintaining restaurant asset protection?

Locking all unauthorized entrances is indicative of maintaining restaurant asset protection as it directly relates to security measures designed to deter theft, unauthorized access, and potential safety issues within the premises. By controlling who can enter the restaurant, the establishment significantly reduces the risk of loss or damage to property, ensuring that only authorized personnel have access to sensitive areas and assets.

This practice not only safeguards physical inventory and equipment but also enhances the safety of employees and customers by limiting access to those who should be on the premises. Security measures like these are crucial for maintaining operational integrity and protecting the business's assets.

In contrast, while the other choices can contribute to operational efficiency or customer service, they do not directly focus on asset protection in the same way. Offering complimentary meals might foster goodwill but does not inherently protect assets. Regular audits of supplies can help track inventory but do not prevent unauthorized access or theft. Reducing staffing during off-peak hours is a strategy for cost management rather than directly aimed at asset protection.