A team is getting ready to begin working on a machine learning project.

The best answer is A. Pipelines are pattern- and model-needs specific . PMI-CPMAI treats data preparation as something that must be tailored to the AI use case, the data involved, and the model being developed. The official outline includes defining required data, mapping data requirements to business objectives, overseeing data cleaning and preprocessing workflows, managing normalization, augmentation, and feature-related activities, and verifying that preprocessing results are valid before model training. In the CPMAI v7 outline, PMI also emphasizes engineering AI data pipelines, creating separate training and inference pipelines, and addressing AI-specific needs in data preparation . These points strongly support the idea that a previous project’s pipeline should not be reused blindly.

This answer is also consistent with PMI’s pattern-based thinking: different AI patterns and model approaches require different data structures, labels, transformations, and quality controls. As an inference from PMI’s methodology, a pipeline that worked for one project may be unsuitable for another because the new project may have different objectives, preprocessing requirements, or model behaviors. Option B is too broad, Option C is too permissive, and Option D is too narrow because the issue begins before operationalization.