Driving forces may include:

Ideally a & c, but there is one more addition - one can be driven by action, words but the other just need a friendly place to do his/her best. So it is the proper, safe working environment!

I'd go with A & C. i would add effective collaborative leadership and clear vision of the mission & goals.   

Option D is the right answer.

Key internal forces (such as knowledge and competence of management and workforce) and external forces (such as economy, competitors, technology) that shape the future of an organization.

of course C,because low moral can only make the employee dis motivated.

Deriving force include  Praise from manager and effective reward system. 

The right answer is a&c.......................

 d. >>>>>>>>>>>>>>>>>>>>>>>>>> A & C.  

Words of praise from a manager

A and C................................

All answered people are right. No comments