Explanation
The consultant should recommend the Standard account model for the Intellectual Property department, because it allows them to use the standard Account and Contact objects to manage their B2B business process, without creating additional records or relationships. The Household account model and the Administrative account model are designed for managing B2C or educational relationships, not B2B. References:
https://powerofus.force.com/s/article/EDA-Account-Model
https://help.salesforce.com/s/articleView?id=sf.account.htm&type=5