Vesting decision-making authority in lower-level managers or other employees is called:

Thank you for invite. It is " A ".

(A)                        Thank You. 

Decentralization or delegation of authority - the best way to manage and take on more responsibility.

   A)    decentralization.  ^^^^^^^^^^^^

  A)    decentralization. ...................................................................

you you put answer too then how I or any other person may answer, you should answer after sometime so that we can conclude that were we right or wrong but anyway answer is Decentralistion

      A)    decentralization

advantages of Decentralization 

1. Reduces burden of top executives

2. Quick and better decisions

3. Growth and diversification

4. Better communication

5. Development of executives

6.Improvement in motivation and morale

7. Effective supervision and control

8. Democratic management:

I Will go With Option " A " ..