Number problem: IMO, D is correct.
Premise: more people are killed every year in road accidents than in air crashes
Conclusion: airplanes is in fact safer than travelling by a car or a bus
Assumption: the number of people who travel by airplanes is not less than those travel by bus.
(A) Airlines across the globe spend significant amounts of mone
y every year on adding new safety features to their airplanes Wrong. Out of scope.
(B) There is no country in the world in which the number of people killed
in air crashes exceeds the number of people killed in road accidents Wrong. (Shell game). B only talks about the number of people killed in air / road.
(C) In a recently conducted survey by an independent agency, a majority of the respondents stated that they felt safer
while travelling by air than while travelling by road Wrong. "felt safer" does not say anything about the number of people.
(D) The number of people who travel by airplanes every year is roughly equal to the number of people who travel by road. Correct.
(E) The technology
used in modern aircrafts is much more sophisticated than that used in most forms of road transport.Wrong. Out of scope.
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