The subcontractor agrees that all work shall be done subject to the final approval of whom?

The correct answer is the architect because, in many construction projects, the architect plays a critical role in overseeing the design and execution of the work. The architect is responsible for ensuring that the project adheres to the specified plans and design intentions. This includes approving or rejecting the subcontractor's work based on adherence to these standards.

In this context, subcontractors often understand that their work must align with the overall vision laid out by the architect. The architect acts as a liaison between the design intent and the construction process and has the authority to finalize approval on the quality and compliance of the work performed.

This approach helps maintain the integrity of the project and ensures that all aspects meet the required specifications and standards, which is why the architect's approval is vital in the context of subcontracting work.