Critical Reasoning

When an airplane is taken out of service for maintenance, it is often repainted as well, and during the
repainting no other maintenance work can be done on the plane. In order to reduce maintenance time, airline
officials are considering using a new nontoxic plastic film instead of paint. The film takes just as long to apply
as paint does, but many other maintenance tasks can be carried out at the same time. Which of the
following, if true, is further evidence that using the film will help the airline officials achieve their
goal?
A. Unlike paint, the film gives a milky tone to certain colors.
B. At the end of its useful life, the film can be removed much more quickly than paint can.
C. The film can be applied only by technicians who have received special training.
D. The metal exteriors of airplanes have to be protected from high temperatures and caustic chemicals such as
exhaust gases.
E. Even at speeds considerably higher than the normal speed of a passenger jet, the film remains securely
attached.




b

This is a STRENGTHEN question.
Previously: with old technique of applying paint on aircraft exteriors, No other repairs could be carried out on the plane.
Proposed: To use a plastic film that will allow other repair work that can be carried out at the same time as the plastic film is applied.
Any answer choices that can indicate that the application of plastic film will not cause delays at some other point will help achieve airline officials goals.
A is NOT DISCUSSED in the passage.
B says at the end of its useful life, it can be removed more quickly than paint which is a good point for using the plastic film. Lets keep this for now.
C: film can be applied ONLY by trained technicians. This actually WEAKENS the argument. even though artificial film might be effective, people must be trained before it can be applied. more investment is needed before this can be implemented.
D: not discussed in the passage nor states that current paint does not protect metal exteriors from high temperatures.
E: does not discuss anything about excessive speeds.

hence B is our answer.

Answer - B
the issue is not just protecting the exterior of the planes per se; rather, the issue is protecting the exterior of the planes better than paint does.
Answer should deal directly with comparative maintenance time or connection between protecting the planes' exterior and reducing maintenance time;
time efficiency and faster maintenance is crucial here
to strengthen the argument, you actually need evidence that the plastic will save time relative to the paint.
(a) Talks about film - milky tone to certain colors; Not related to time efficiency and faster maintenance
(b) does this -- it says that time will be saved during removal; the only one that's even tangentially related to that idea, so it's the winner almost by default
(c) talks about film and technicians with special training; Not related to time efficiency and faster maintenance
(d) talks about protection to metal exterior; Not related to time efficiency and faster maintenance
(e) doesn't; it just says that the film won't come off at high speeds. since paint obviously won't come off at high speeds either, this choice just gives a way in which the plastic and the paint are equivalent; it doesn't show that the plastic saves time.

Goal is ease in Maintainence, therefore Ans should be B