Final answer:
Visible light is the safest electromagnetic wave that interacts with people in terms of energy of radiation.
Step-by-step explanation:
According to the information provided, the safest electromagnetic wave that interacts with people in terms of energy of radiation is visible light. Visible light waves have lower energy compared to gamma rays, x-rays, and ultraviolet rays which can be dangerous to living systems. It is important to note that longer waves, such as radio waves, are also less energetic and safer for humans.