Which components in the CMMI V2.0 model emphasize performance?

The correct answer highlights the crucial role of practice groups or levels in emphasizing performance within the CMMI V2.0 model. CMMI is structured around specific maturity levels that organizations aim to achieve, each representing a different degree of process maturity and capability. These levels, alongside the associated practice groups, provide a framework for systematically improving performance.

Practice groups outline the key processes that organizations should implement to enhance their performance at each maturity level. They focus not only on effective practices but also on measurable outcomes that indicate performance improvements. By encouraging organizations to adopt best practices tailored to their specific contexts, CMMI ensures that there is a clear pathway to optimize performance and achieve business goals.

The other components mentioned do play roles in the overall effectiveness of an organization's processes but do not directly emphasize performance in the same strategic manner as practice groups or levels do. Training materials provide knowledge but don’t inherently define performance measures. Documentation guidelines help in maintaining consistency and clarity but are not primarily focused on evaluating or enhancing performance. Evaluation metrics are important for measuring performance but are often derived from the practices established at different maturity levels.