Which of the following is not a part of the business environment of business?

None of the above

The correct answer is option 4- None of the above.

Business environment includes both specific and general forces.

Specific forces (such as investors, customers, competitors and suppliers) affect individual enterprises directly and immediately in their day-to-day working.
General forces (such as social, political, legal and technological conditions) have impact on all business enterprises and thus may affect an individual firm only indirectly.

So, all are business environment forces.