Read this paragraph from an essay: (1) These days, many new pilots find their way from airport to
airport using GPS, the same system the rest of us use to
navigate when we're driving. (2) However, a pilot shouldn't rely on
GPS alone. (3) Learning traditional VOR navigation is crucial to
becoming a professional pilot. (4) A pilot who doesn't learn VOR
navigation can't expect to get a license.
Which sentence - if placed between sentences 3 and 4 - would most improve the
clarity of the paragraph?
O A. In general, GPS has spoiled young pilots, so when they're asked to
navigate using VOR, they almost always fly off course or get completely
lost.
O B. VOR, which stands for "Very High Frequency Omnidirectional Radio
Range, is a navigation system that uses signals from radio towers to tell
pilots in flight where they are.
O C. Just the other day, I had to correct a student pilot for not understanding
which VOR radial was necessary to navigate from Sea-Tac Airport to
Renton Municipal Airport, he had tuned to the wrong frequency!
O D. To use VOR effectively, pilots must master the use of their CDI and VOR
indicators, as well as their NAV/COM radio, whether they are following
procedures for VFR or IFR.
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