Answer:
The answer is below
Explanation:
There differences between the Zilok firm and the Chegg firm.
Considering the available options, the difference between the two firms is that "Zilok provides inventory provided by participating 'citizen suppliers', Chegg owns its inventory."
This is evident in the fact that while Zilok provides people with a rental agreement to utilize with the renter, Chegg provides educational services using their own inventory.