A global project team is facing difficulties with communication due to time zone differences. Critical decisions are being delayed because emails are not answered promptly. The project manager needs to improve the communication method. What is the BEST approach?

Mandate a daily stand-up meeting at a time that is convenient for the head office.

Implement a 'follow-the-sun' workflow where work is handed off at the end of each day.

Establish a core set of 'overlap hours' for synchronous communication and use asynchronous tools for status updates.

Route all communications through the project manager to ensure nothing is missed.