Indoor air pollution like outdoor air pollution is both man-made and found in the natural environment. In what way can someone prevent radon from entering their home?
A) Radon gets inside through basement cracks, seal them.
B Radon gets inside during wet rainy seasons, keep windows closed and humidity out.
C Radon gets inside during high pollution days, close windows and doors.
D Radon is not harmful inside the house, it is more harmful outside.
E) Radon is found underground and should not escape unless you build a basement.