What type of signals can interfere with GPS functionality?

The correct answer relates to signals bouncing off the Earth's surface, which can indeed interfere with GPS functionality. This phenomenon, known as multipath interference, occurs when GPS signals reflect off buildings, water, or other surfaces before reaching the GPS receiver. These reflected signals can create confusion in the GPS system, leading to inaccuracies in position calculation or time delay due to the longer path the reflected signal takes to reach the receiver.

While wireless signals and signals from aerial navigation might impact radio frequency environments, they don’t typically disrupt the core functionality of GPS as much as the multipath effect does. Underwater communication signals are generally outside the frequency range used by GPS and would not interfere with GPS signals in a meaningful way. Thus, the bouncing of signals off surfaces presents the most significant and relevant challenge to the accurate functioning of GPS technology.