Which of the following actions can a licensee take that is permissible according to Maryland law?

C is the correct choice because Maryland law allows licensees to rebate part of their commission to clients or customers as long as the transaction is conducted transparently and all parties involved are aware of the arrangement. This practice can enhance customer satisfaction and incentivize business, showing appreciation towards clients for their loyalty or referrals.

Offering incentives for referrals without disclosure is not permissible, as transparency in transaction costs and incentives is critical to maintaining trust and integrity in real estate transactions. Entering into verbal agreements regarding commissions is also problematic, as Maryland real estate law requires commission agreements to be in writing to avoid misunderstandings and disputes. Lastly, paying bonuses to unlicensed personnel is not allowed as it can violate regulations regarding compensation for real estate services, which can only be provided by licensed individuals.