Questions 143~146 refer to the following passage. 
Giving employees more control over their work schedules can have a __143__ impact on their productivity and engagement levels. Allowing workers to have some flexibility in choosing when they work, or adjusting their hours as needed, can create a sense of ownership and accountability for their tasks. This can lead to increased motivation, as employees feel more valued and trusted by their employer. __144__ , having control over their schedules can help reduce stress levels, as workers can better balance their personal and professional commitments. When employees feel supported and empowered to manage their time effectively, they are more likely to stay engaged and committed to their work. Ultimately, __145__ can result in a more productive and positive work environment, as employees feel motivated to contribute to the success of their organization. Providing employees with more control over their schedules can be a simple __146__ powerful way to promote productivity and engagement in the workplace.
【題組】143.
(A) profound
(B) external
(C) short-lived
(D) trivial