Certain devices utilize electromagnetic waves to determine the position and velocity of an object. In these devices, the waves are emitted, reflected off the object, and then returned to the device. By understanding the wave's speed and the time it takes for the wave to return, the distance traveled by the wave can be calculated. Which category of wave would be the most secure choice for such a device?
a. Opting for gamma waves is the safest decision due to their higher speed of travel.
b. Opting for radio waves is the safest decision as they pose the least harm to organisms.
c. X-rays would be the most secure option as they have the capability to go through various materials.
d. Choosing ultraviolet waves is the safest option since they are the most visually detectable.