Final answer:
The IT job role focused on managing the maintenance and security of an organization's data is the Database Administrator. Software engineers are more likely to hold positions of power in an information society. Software developers work in the Tertiary sector of the economy.
Step-by-step explanation:
The IT job role that best describes an individual responsible for managing the maintenance and security of an organization's data is c) Database Administrator. This role typically involves overseeing the proper operation of databases, ensuring their security, performing regular maintenance, and implementing measures to safeguard the data against unauthorized access or corruption.
Regarding the occupations in an information society, a person of power is more likely to be a a) Software engineer rather than a coal miner, as the former plays a significant role in developing the digital tools and platforms that facilitate the flow and management of information.
As for the sector of the economy where a software developer works, they would be in the c) Tertiary sector, which is service-oriented and includes jobs related to information technology, among a myriad of other service jobs.