Final answer:
The commission of the leasing agent is typically based on a percentage of the first year's rent.
Step-by-step explanation:
The commission of the leasing agent in typically based on a percentage of (a) the first year's rent. This means that the leasing agent's commission is calculated as a percentage of the total rent amount for the first year of the lease. The exact percentage can vary, but it is commonly around 4-6%.