Question

consider the following research topic:
the technology behind gps navigation
which magazine article would likely include the most relevant information about this topic
\essential navigation products for finding your way in the great outdoors\
\have fun geocaching! use a gps receiver to hunt for hidden treasure\
\the high - tech inner workings of the global positioning system\

Explanation:

The research topic is about the technology behind GPS navigation. The first article focuses on navigation products in general for outdoors, not specifically the technology of GPS. The second article is about using a GPS receiver for geocaching (a recreational activity), not the technology. The third article, "The High - Tech Inner Workings of the Global Positioning System", directly addresses the technology (inner workings) of the Global Positioning System (GPS).

Answer:

"The High - Tech Inner Workings of the Global Positioning System"