$17)$ A $\_\_\_\_\_\_\_\_$ eliminates many in$-$house business functions and activities in favor of focusing only on those aspects for which it is best equipped to add value.

A$.$

A$)$ value network

B$.$

B$)$ mechanistic distribution system

C$.$

C$)$ virtual organization

D$.$

D$)$ physical distribution system

E$.$

E$)$ tall organization