What factors affect the RF exposure of people near an amateur station antenna?

RF exposure evaluates how much electromagnetic energy a human body is subjected to. The power level determines the sheer amount of RF energy emitted, while distance heavily influences exposure due to the inverse square law, where energy dissipates rapidly as you move further away. Additionally, frequency matters because the human body absorbs certain frequencies more efficiently than others. The radiation pattern of the antenna is also critical, as directional antennas focus RF energy in specific directions, meaning a person standing in the main lobe receives far more exposure than someone standing to the side. Because every single one of these variables directly impacts how much RF energy reaches and is absorbed by a person, all the choices are correct.