Companies can help employees to experience more work-life balance by offering:?

It includes all the answers mentioned above.  Hence option D.

Coorect option...D) All of the above

D)    all of the above.^^^^^^^^^^^^^^^^^^^^^^^

 D)all of the above is the right answer

Of course it's d) all of the above

D) is the correct answer, but not many companies offer C).

 D)   >>>>>>>>>>>>>>>>>>>> all of the above.

Number D OF THE ABOVE MENTIONED 

ALL of the bove  ....point   *D*

the answer is all the above