Final answer:
Completing cultural diversity courses offered by the employer is the action most likely to foster a global mindset in employees, as it directly addresses cultural understanding and teamwork in a diverse work environment.
Step-by-step explanation:
The action most likely to contribute to developing a global mindset is completing cultural diversity courses offered by the employer. Such courses are designed specifically to educate participants about cultural differences, with the aim of improving teamwork and collaboration across diverse groups. They address potential prejudices by promoting understanding and respect for coworkers from various backgrounds, religious, ethnic, or racial. Moreover, these courses often include strategies for effective communication, an understanding of different work styles, and the fostering of a respectful environment for all employees. By participating in diversity training, employees can adapt to and operate effectively within a multicultural workforce, which is indispensable in today's global business landscape.