![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
With the intention of attracting a somewhat different type of passenger, the airlines have now begun to concentrate on ______.
A.
ensuring that the facilities offered to the executive are indeed superior
B.
providing facilities enabling business travelers to work on board
C.
organizing activities in which first-class passengers can participate
D.
installing sleeping compartments where more privacy is ensured