The consultant should recommend Agile as an approach to deliver additional functionality in smaller units through an iterative process for the university that completed its first implementation of Salesforce. Agile is a project management methodology that focuses on delivering value to customers in short and frequent iterations, incorporating feedback and changes along the way. Agile can help the university deliver additional functionality in smaller units through an iterative process by using features such as user stories, sprints, or scrum meetings. Work Breakdown Structure and Waterfall are not approaches that can deliver additional functionality in smaller units through an iterative process for the university that completed its first implementation of Salesforce. Reference:
https://trailhead.salesforce.com/en/content/learn/modules/agile-basics
https://www.salesforce.org/wp-content/uploads/2019/03/Education_Cloud_COE_Guide.pdf