What makes the managerial task of executing strategy so challenging and demanding is the

a$.$ time and effort it takes to build core competencies.

b$.$ people$-$management skills required, the resistance to change that has to be overcome, and the pert of initiatives launched and kept moving along.

c$.$ trial$-$and$-$error experimentation that is required to come up with a workable organizational structure

d$.$ supervisory requirements associated with getting company personnel to do things the right way.

e$.$ time, training, and creative effort it takes to empower employees and teach them responsible dec