Final answer:
The term for someone who develops server-side Web applications is a Back-end developer. They work in the tertiary sector of the economy, which includes service-based occupations like software engineering—a prominent role in an information society.
Step-by-step explanation:
The term for an individual who develops server-side Web applications is C) Back-end developer. Back-end developers are responsible for server-side logic, databases, and application integration. In contrast, Front-end developers focus on the client-side, which involves designing and developing the user interface. A Full-stack developer is proficient in both front-end and back-end development and can handle all aspects of web application creation.
In the context of the economy, a software developer typically works in the tertiary sector, which involves the provision of services rather than the production of goods. The Quaternary sector is a further distinction within the service industry that specifically includes information-based services such as software development.
Regarding occupations in an information society, a Software engineer is a person of power most likely to have. Their role is significant due to the reliance on information technology and systems in driving modern societal functions, in contrast with jobs like coal mining which represent the primary sector and are less emphasized in an information society.