Mexico-based Rodriguez Engineering Corp. requires host-country nationals to be recruited to manage subsidiaries, while parent-country nationals occupy key positions at corporate headquarters. What type of staffing policy does this company use

Polycentric approach

Explanation:

A polycentric staffing policy is a form of staffing policy whereby the nationals of the host countries will be recruited and employed to helps manage the subsidiaries that are in their own country while the nationals of the parent countries will have to occupy th key positions that are available at th corporate headquarters.

This is the kind of approach that is used by Mexico-based Rodriguez Engineering Corporations in the question.