Final answer:
The first phase in the project life span is conceptualization (option B), which precedes design, planning, and implementation, involving the generation and selection of initial project ideas.
Step-by-step explanation:
The first phase in the project life span is B) conceptualization. During the conceptualization phase, the initial idea for a project is developed. This phase involves understanding the problem, researching, exploring possibilities, and selecting a design concept that will drive the project forward. It is followed by more detailed phases such as design, planning, and ultimately implementation, where the finalized design is realized into a physical or digital product.
After conceptualization, the process continues with the development of a detailed design, including the creation of design architecture and refining the design based on prototypes and models. Flexibility is important during this phase, as revisions and refinements often occur before reaching the implementation stage.