To increase the likelihood of the success of a software project, the project plan should...

 Dynamic Planning: A project plan that is reviewed and updated at each phase ensures that it remains relevant and accurate, reflecting any changes in scope, resources, or timelines.

 Continuous Improvement: Regular updates allow for continuous improvement and alignment with project goals and stakeholder expectations.

 Standards and Guidelines: Project management standards, such as those outlined by the Project Management Institute (PMI), advocate for iterative review and updating of project plans.