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A city bus operator released a mobile application that shows passengers exactly when the next bus is due at their stop. In the year that followed, complaints about late buses rose sharply, although independent checks confirmed that the buses ran no later than they had before. Which of the following, if true, best explains the rise in complaints?

Competition practiceLogical / Critical
  • AThe application can be installed only on the newer kinds of telephone
  • BBefore the application, passengers had no way of knowing when a bus was due, so lateness that they can now see and measure earlier passed unnoticed
  • CThe operator added two buses to its fleet during the year
  • DPassengers who use the application tend to buy their tickets in advance

Step-by-Step Solution

Complaints track what passengers can detect, not what actually happens. Once a promised time is displayed, every gap between promise and arrival becomes visible and reportable, so the same performance generates far more complaints. The other options concern who can use the application, the size of the fleet and ticketing habits, none of which changes how visible lateness is.
Answer: B) Before the application, passengers had no way of knowing when a bus was due, so lateness that they can now see and measure earlier passed unnoticed

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