Question

gps receivers calculate their positions based on signals from _________.
a. airplanes
b. weather balloons
c. radio towers
d. satellites

please select the best answer from the choices provided

a
b
c
d

Explanation:

GPS (Global Positioning System) works by receiving signals from a network of satellites. Airplanes, weather balloons, and radio towers are not part of the GPS signal - providing infrastructure. Satellites in the GPS constellation transmit signals that GPS receivers use to calculate their position.

Answer:

D. satellites