Answer:
C
Explanation:
There are three types of Industries namely Primary ,Secondary and Service Sectors. The third type of industries known as service sectors are the ones that provide services to the people.
Such types of sectors earn revenue through providing intangible products and services to the people of the society. These companies provide services which are beneficial to the people and they get an advantage after getting such services. The very good examples are that of the Doctors ,Chartered Accountants , Engineers etc.
Though these services are been paid for but still they provide benefit to the people who enjoy such services.
