Prospective buyers asked the licensee representing them if it would be a good idea to check the property they wish to purchase for radon. The licensee's best response would be to tell the buyers that

This statement lacks reliability, as radon levels can vary significantly from one location to another and even within individual properties. Assuming that radon is unlikely without proper testing can lead to dangerous oversights, as many homes in areas considered safe have been found to have elevated radon levels.

This response is misleading; while smoking is a major risk factor for lung cancer, radon exposure is dangerous for all individuals regardless of their smoking status. Non-smokers can also develop lung cancer due to radon exposure, making it critical to test for the gas regardless of the occupants' smoking habits.

This statement is incorrect, as radon is odorless and tasteless, making it impossible to detect without specialized testing equipment. Relying on any sensory detection would leave occupants unaware of potential health risks associated with radon exposure.