Which of the following is part of the operating process?

Question

a. sale of a warehouse
b. purchase of machinery
c. purchase of inventory
d. sale of common stock of another firm

Answer 1

I think the best answer here is C.

Answer 2

If the question is fair, the C.
Operating means repetitive.
Is what the company makes every day to make money.
For that, you need to replenish inventories all the time, forever.
That does not happen with the others.
But, if the question is tricky, all of them could be operative:
a. if you are a real estate agent
b. if your job is buying and selling machinery
d. if you are a financial/stockbroker firm