Under what condition can you deviate from the specifications?

The correct choice focuses on the importance of formal communication and documentation in construction and contracting. Deviating from specifications without proper authorization can lead to significant risks, including legal issues, quality control problems, or safety hazards. When an architect provides written approval for a deviation, it indicates that the change has been officially sanctioned and documented, ensuring that all parties are aware of and agree to the adjustment. This written approval serves as a protective measure for both the contractor and the subcontractors involved, providing clear guidelines on how to proceed while mitigating potential disputes.

In contrast, other conditions such as a project being ahead of schedule or receiving verbal approval from the contractor lack the necessary formalization and may not be recognized as legitimate grounds for deviation. Additionally, a request from a client could be subject to various interpretations or levels of authority and would typically require further evaluation and formal documentation, such as an addendum or change order, to ensure compliance with contractual obligations. Overall, written approval from the architect plays a crucial role in maintaining the integrity and legality of the construction process.