Within a Practice Area, each evolutionary level builds on the previous levels and adds new functionality or sophistication. True or False?

The statement is true because, within the context of CMMI (Capability Maturity Model Integration), each evolutionary level indeed builds upon the foundations established by previous levels. This progressive structure is designed to enhance the organization's processes and capabilities incrementally.

At each level of maturity, additional practices and functionalities are introduced, which contribute to greater process improvement, efficiency, and effectiveness. As organizations ascend the maturity levels, they refine their practices, which includes not only the integration of new techniques but also the strengthening of existing ones.

This principle ensures that organizations do not just move randomly through the levels but rather follow a structured path of improvement, enhancing their operational capability systematically. Therefore, this layered approach is a hallmark of the CMMI framework, which is reflected in the correct response to the question.