单选题
24. Based on the passage above, which statement is definitely true?
With increased demands on business executives to travel in the globalised economy, how do globe-trotting executives manager their travel demands? A highly invaluable resources tapped by senior executives is the use of one or more personal assistants. More than glorified receptionists, PA's hold considerable power in the work place, deciding who gains access to their employer and when, being privy to highly sensitive information and maintaining order in the executives absence. Having this extra helping hand can allow executives to focus on the more important tasks and objectives, allowing them to save time, effort and improve efficiency.