The consultant should recommend one Salesforce environment for all business units as a Salesforce environment strategy for the university. This means that the university will have a single Salesforce org that will support the needs and processes of all the business units, such as Recruitment, Corporate Relations, Executive Education, and Alumni Relations. This can help the university achieve data consistency, visibility, and collaboration across the business units, and leverage the centralized IT team and the data governance and change management committee. The consultant can also help the university implement security and sharing settings to control access and visibility of data for each business unit. Having separate Salesforce environments for each business unit, or for Recruitment or Alumni Relations only, are not Salesforce environment strategies that the consultant should recommend for the university. Reference:
https://www.salesforce.org/wp-content/uploads/2019/03/Education_Cloud_COE_Guide.pdf
https://trailhead.salesforce.com/en/content/learn/modules/org-setup