A government survey released today shows that 80 of the people who fly are satisfied with the servic...........

Logical Reasoning(Insurance) Statement - Conclusions

A government survey released today shows that 80 % of the people who fly are satisfied with the service they receive from the airlines in this country. Three interviewers stood outside a major airport and asked people leaving the terminal, “Do you have any complaints about the flight you just got off?” Only 20 percent responded “yes!”

Which of the following, if true, would most undermine the conclusion of the argument above?

Sixty percent of the people coming out of the airline terminal were not people who had just gotten off a flight.

One percent of the people approached by the interviewers refused to respond to their inquiries.

The interviewers began their inquiry just after passengers were discharged from a flight that was 40 minutes late.

The interviewers were able to speak to only 70 percent of the people leaving the terminal, but those people were selected at random.

For six months following the day of the interviews, no official complaints were filled by any passenger with the Federal agency that regulated the airlines.

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Explanation:

The question was put to people who were coming out of the terminal about the services aboard the flight. If it was shown that a majority of people coming out of the terminal were not passengers, Then the conclusion would really be jeopardized. (a) does just that.