Airline: Newly developed collision-avoidance systems, although not fully tested to discover potential
malfunctions, must be installed immediately in passenger planes. Their mechanical warnings enable pilots to
avoid crashes.
Pilots: Pilots will not fly in planes with collision-avoidance systems that are not fully tested. Malfunctioning systems could mislead pilots, causing crashes.
The pilots' objection is most strengthened if which of the following is true?
(A) It is always possible for mechanical devices to malfunction.
(B) Jet engines, although not fully tested when first put into use, have achieved exemplary performance and
safety records.
(C) Although collision-avoidance systems will enable pilots to avoid some crashes, the likely malfunctions of
the not-fully-tested systems will cause even more crashes.
(D) Many airline collisions are caused in part by the exhaustion of overworked pilots.
(E) Collision-avoidance systems, at this stage of development, appear to have worked better in passenger
planes than in cargo planes during experimental flights made over a six-month period.
I stuck between A and C. Although C sounds more reasonable and close to what pilot is pointing to, if A were not true the pilot's argument will be weakened.
How to eliminate incorrect options in such cases?
malfunctions, must be installed immediately in passenger planes. Their mechanical warnings enable pilots to
avoid crashes.
Pilots: Pilots will not fly in planes with collision-avoidance systems that are not fully tested. Malfunctioning systems could mislead pilots, causing crashes.
The pilots' objection is most strengthened if which of the following is true?
(A) It is always possible for mechanical devices to malfunction.
(B) Jet engines, although not fully tested when first put into use, have achieved exemplary performance and
safety records.
(C) Although collision-avoidance systems will enable pilots to avoid some crashes, the likely malfunctions of
the not-fully-tested systems will cause even more crashes.
(D) Many airline collisions are caused in part by the exhaustion of overworked pilots.
(E) Collision-avoidance systems, at this stage of development, appear to have worked better in passenger
planes than in cargo planes during experimental flights made over a six-month period.
I stuck between A and C. Although C sounds more reasonable and close to what pilot is pointing to, if A were not true the pilot's argument will be weakened.
How to eliminate incorrect options in such cases?
