Answer:
The correct answer would be option D, Global and cultural effectiveness and relationship management.
Explanation:
Human Resource is a department which is considered the most important and crucial part of any company. This is because of the fact that HR department is the one who is responsible for everything concerning the employees. So if the job of the senior HR personnel is to build networks across the countries to provide local support for the company's operation in various countries, then the competency which the personnel must have is the global and cultural effectiveness and relationship management, because that personnel must need global and local cultural effectiveness to act as a link between them to fulfill the job given.