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Analyze the image below and answer the question that follows.

A person holding a G P S device up to the sky. Red lines point from the G P S to satellites.
Image by Javiersanp

In order to help us find our exact location, GPS uses signals that are broadcast from __________ and interpreted by __________.
A.
airplanes . . . receivers
B.
balloons . . . software
C.
aerial photos . . . software
D.
satellites . . . receivers

Please select the best answer from the choices provided
A
B
C
D