I believe the answer is: Services.
In non-service industries, the product that sold by the customer has an actual concrete shape that would be given along with the ownership rights.
In service industries, the product that sold is in the form of time, skills, or intellectual property, that given to the customer without the ownership rights
The answer is most likely:
none
This question has choices including none of the above. The first choice seems to be inappropriate wherein it states that prepared core typical of prehistoric modern humans that inhabited this region, and the other two choices doesn't fit the question too. Thus, the answer is none of the above.