Which sentence - if placed between sentences 3 and 4- would most improve the
clarity of the paragraph?
A. 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.
B. 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.
C. 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 D. 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!
