Since a marketing campaign began for the public transportation service from downtown to the newly built baseball stadium, automobile traffic in the area of the stadium on days of baseball games has decreased twenty-five percent. Simultaneously, there has been an equivalent rise in the number of persons riding public buses to the games. Without a doubt, the marketing campaign has been successful in convincing people to leave their cars at home and ride the bus to baseball games.
Which of the following, if true, casts the most serious doubt on the conclusion drawn above?
A. Since the marketing campaign began, the cost of bus fares to the stadium has risen dramatically.
Incorrectmore people ride buses while bus fairs increase, so can say campaign is successful
B. As part of the marketing campaign, high-profile occupants of luxury suites at the stadium have been seen riding the buses to games.
Incorrectsupport conclusion
C.
Since the marketing campaign began, the cost of parking a car in the lots surrounding the stadium has risen to an amount equivalent to thirty times the old cost of a bus ticket to the stadium, which itself has been reduced by half during the same period. Correctso, parkin fee is the main fact for increased bus riders because still parkin fee is 15 times higher than previous
D. The number of bus routes available to the stadium is exactly the same both before and after the marketing campaign.
Incorrectnot helpful
E. Surveys show that the customer satisfaction of bus riders to the stadium has not increased since the start of the marketing campaign.
Incorrectirrlevant