According to the PMBOK® Guide and the Standard for Project Management, specifically within the Project Quality Management Knowledge Area, quality planning (Plan Quality Management) should be performed in parallel with the other planning processes.

As per PMI standards, project planning is an iterative and integrated activity. Quality planning is not an isolated event; it significantly influences and is influenced by other processes. For example:

Scope and Quality: Identifying quality standards is essential for defining the detailed project scope and the technical requirements of the product.

Cost and Quality: The " Cost of Quality " (COQ) must be factored into the project budget. High-quality requirements may increase initial costs but decrease long-term costs associated with rework or warranties.

Schedule and Quality: Quality activities, such as inspections, testing, and audits, must be scheduled as specific activities within the project timeline.

Risk and Quality: Quality planning helps identify potential risks related to non-conformance and establishes the standards required to mitigate those risks.

The other options are incorrect based on the following PMI process alignments:

While developing the project charter: The charter contains high-level requirements and success criteria, but the detailed Plan Quality Management process requires the project management plan and scope baseline, which are not yet available during the Initiation phase.

As part of a detailed risk analysis: While quality and risk are closely related, quality planning is its own dedicated process with specific outputs (the Quality Management Plan and Quality Metrics) that serve as inputs to risk analysis, rather than being a subset of it.

As a separate step from the other planning processes: This contradicts the PMI principle of Integration. Treating quality as a " separate step " often leads to silos where quality requirements are disconnected from the budget, schedule, or scope, leading to project failure.

As per the PMI Lexicon of Project Management Terms, the Plan Quality Management process ensures that the standards and objectives for the project are identified early and integrated into the overall roadmap to prevent defects rather than just detecting them.