Final answer:
During the execution Process Group in an IT project's life cycle, the primary activity carried out is developing the software code, transforming the detailed design into a working system.
Step-by-step explanation:
In the case of an information technology (IT) project, activities carried out during the execution Process Group of the project life cycle include the development of the actual product or service. Specifically, this would involve developing the software code. This stage is where the detailed design that was previously created is turned into a functioning system through coding, testing, and refining. Other activities such as identifying the project team and acquiring the project management infrastructure typically occur in the planning phase; developing detailed procurement plans may span both planning and execution, depending on the project’s needs; and archiving the project documents is part of the project closure.
During the development phase, prototyping, testing, and refinement are key activities that lead to the completion of detailed design objectives. The execution phase is also characterized by strong communication and implementation efforts, where progress is documented and results related to design processes are shared with stakeholders.