Final answer:
A Realtor is the one whose education, training, and experience as well as license or certification qualify him or her to estimate property values using formal processes.
Step-by-step explanation:
In the context of the question, the correct option is A. Realtor.
A realtor is a licensed professional who has completed education, training, and has experience in estimating property values using formal processes. They undergo specific education and training to understand the real estate market and determine the value of properties based on factors such as location, size, condition, and comparable sales.
For example, a realtor may use the sales prices of similar properties in the same area to estimate the value of a property.