As shipping department manager, you need urgent clarification from the sales manager on the shipping expectations of a particular customer. Often the sales manager does not respond to your communications quickly or at all.

What proactive communication step can you take to obtain an immediate response in this situation?

Copy his boss and your boss on an emailed communication.

Drive to the sales department to see if the sales manager is there.

Text the sales manager and mark it as $$urgent$."$

Leave a voice message and let the sales manager know how urgent it is$.$