Passage: "When the municipal hall introduced a queue-number system, complaints about long waits dropped sharply. Clients no longer had to stand in line for hours; they could sit, watch a screen and wait for their number. Staff also noticed fewer arguments at the counters. The only problem arose when the system broke down during a power interruption, so the office now keeps printed numbers as a backup." What was the main effect of the queue-number system?
Correct answer: D. Complaints about long waits dropped sharply
The first sentence states that complaints about long waits "dropped sharply" after the system was introduced. The passage also mentions fewer arguments at the counters.
easy