Final answer:
Headers over large openings should be supported by two trimmer studs at each end to ensure stability and safety in the building's framework.
Step-by-step explanation:
When constructing the framework for a building, it's important to ensure that headers over large openings, such as windows or doors, are properly supported. Headers distribute the load from above to the surrounding structure. The answer to your question is that two trimmer studs should be used to support each end of a header over a large opening. This creates a stable base for the header to rest on, distributing weight and stress effectively. This is a standard practice in construction to ensure the integrity and safety of the building framework.