Which activities help organizations understand what is going on "in the trenches"?  doing a "gemba walk" value stream mapping calculating the production order quantity for a given product moving inventory from point-of-use to central storage

The activities that help organizations understand what is going on "in the trenches" are:

1. Doing a "Gemba Walk": This is a practice where managers and leaders go to the actual work floor, or the 'gemba', to observe the work processes. It allows them to see the day-to-day operations, interact with employees, and understand the challenges they face. This firsthand knowledge can help in decision-making and problem-solving.

2. Value Stream Mapping: This is a lean-management method for analyzing the current state and designing a future state for the series of events that take a product or service from its beginning through to the customer. It helps in identifying waste, reducing process cycle times, and implementing process improvement.

The other two options, calculating the production order quantity for a given product and moving inventory from point-of-use to central storage, are more related to inventory management and logistics rather than understanding what's happening "in the trenches".