Final answer:
Software is a collection of programs, and software developers work in the tertiary sector of an economy, contributing to human-software interactions and decision-making processes.
Step-by-step explanation:
Software consists of a group of programs, which makes option c the correct answer.
Software developers work in the tertiary sector of an economy because this sector focuses on providing services, such as the development and maintenance of software.
Technology is a broad term that can refer to various aspects, including computers, software, and tools leveraged by engineers to design systems, but is most closely associated with the practical application of knowledge to create products and systems to meet human needs.