Final answer:
The Initiating phase includes start-up activities and is known as "starting the project" according to PMI, which is part of the Preparatory Phase.
Step-by-step explanation:
The phase that includes start-up activities and is often referred to as "starting the project" by the Project Management Institute (PMI) is known as the Initiating phase. This phase in project management is fundamental, as it involves defining the project at a broad level. The image provided indicates a flow of phases from a Preparatory Phase, followed by an Implementation and Learning Phase, then a Program Evaluation Phase, and finally culminating in the Development of Lessons Learned. Based on typical project management processes, the Initiating phase would fall into the Preparatory Phase, where the project's initial scope is outlined and necessary authorizations are secured to proceed further.
During this phase, the project is started and the activities necessary for the project's success are planned and organized. It is also during this phase that the project's objectives, scope, and stakeholders are identified.
For example, in a software development project, the initiation phase would involve activities such as conducting a feasibility study, defining project goals, creating a project charter, and identifying key stakeholders.