Which of the following best completes the passage below?

At large amusement parks, live shows are used very deliberately to influence crowd movements. Lunchtime performances relieve the pressure on a park’s restaurants. Evening performances have a rather different purpose: to encourage visitors to stay for supper. Behind this surface divergence in immediate purpose there is the unified underlying goal of______

(A) keeping the lines at the various rides short by drawing off part of the crowd

(B) enhancing revenue by attracting people who come only for the live shows and then leave the park

(C) avoiding as far as possible traffic jams caused by visitors entering or leaving the park

(D) encouraging as many people as possible to come to the park in order to eat at the restaurants

(E) utilizing the restaurants at optimal levels for as much of the day as possible

为什么不是B?

 to encourage visitors to stay for supper. 说明PARK是希望游客并以晚上的演出吸引他们使他们留下来吃晚饭,而B选项only for the live shows and then leave the park ,是和PARK的意图相违背的,PARK希望并设法让游客留下来吃饭.所以B不对.

A.irrelevant

c.traffic jams 与吸引游客以增加PARK收入无关

D.游客进PARK的主要目的是看SHOW而不是单纯吃饭.

所以选E