Final answer:
The spiral model's components most accurately represented are Determining objectives, risk assessment, and implementation. These capture the essence of the iterative and evaluative approach of this model, where testing and refinement play a vital role.
Step-by-step explanation:
The spiral model of development is a sophisticated and iterative process often used in software engineering. The components of the spiral model can be best understood by examining its main activities: objective setting, risk assessment and reduction, development and testing, and planning for the next iteration.
Among the given options, the one that outlines components of the spiral model most accurately is a) Determining objectives, risk assessment, implementation. Objective setting includes establishing goals and defining deliverable artifacts. Risk analysis or assessment looks at potential roadblocks or issues, and implementation involves developing a product through iterative cycles.
Testing and evaluation are crucial to this model. It allows designers to identify weaknesses and make refinements for improvement, which is characteristic of the spiral design process. In contrast, options b) and c) either do not cover all the essential components or phrase them inadequately.