new voice-recognition system can limit access to airplane controls, including
those required to pilot the aircraft, to those people who have been licensed to
fly the aircraft. The system identifies the person's voice by analyzing not
only the tone of the voice, but also characteristics such as accent, speaking
speed, and volume. Even the most adept impersonators cannot duplicate all the
characteristics that the system takes into consideration.
statement can most logically be concluded from the above passage?
(A) No one can fly an airplane equipped with the system solely by virtue of their
skill at impersonating voices.
(B) In case of a major emergency this system could lead to a terrible airplane
crash and will not, for that reason, be used by major airlines.
(C) This voice-recognition system is the culmination of many years and millions of
dollars of research and development.
(D) In the wake of 9/11, most airplanes will soon be equipped with these systems to
prevent terrorist attacks.
(E) Even authorized pilots can be barred from flying their own planes if something
is amiss in their voice.