An organization that has achieved a Capability Maturity model Integration (CMMI) level of 4 has done which of the following?

Continuous innovative process improvement is the hallmark of CMMI Level 5 (Optimizing), not Level 4, as it involves proactively identifying and implementing technology and process innovations.

Addressing the causes of common process variance through statistical process control is a characteristic activity of Level 4, but the outcome described - 'predictable process performance' - is the defining achievement; this choice describes a method rather than the distinguishing outcome tied to any single level.

Optimized process performance is associated with CMMI Level 5 (Optimizing), which focuses on continuous improvement and eliminating defect causes through innovative means, not Level 4.

CMMI Level 4, called 'Quantitatively Managed,' is characterized by the use of statistical and quantitative techniques to manage and control processes, making process performance measurable and predictable. Organizations at this level establish quantitative quality and process-performance objectives and use data-driven methods to achieve them, distinguishing Level 4 from the qualitative management of lower maturity levels.