Where is the best location to place a short-term radon test kit?

Answer: In the lowest room which is POSSIBLE living space. Usually the basement, even if it's not a finished space

Answer: Basement. https://www.epa.gov/radon/basic-radon-facts

Answer: Lowest livable level of a home, whether it's finished or not.

Answer: In the lowest livable area of the home • In an area where it will not be disturbed; • At least three feet from doors and windows to the outside; • At least one foot from exterior walls; • 20 to 30 inches away from the floor; • At least four inches away from other objects horizontally and directly above the detector; • Away from drafts • Four feet from heat, fireplaces, furnaces, and away from direct sunlight and areas of high humidity.

Answer: Lowest level in property.

Answer: In the lowest livable area of the home.