What must a contractor do regarding any assignment?

A contractor must immediately notify the City about any assignment as this is crucial for maintaining transparency and accountability in the contractor agreement. This requirement ensures that the City is informed of any changes or transfers of responsibilities that may affect the execution of the project. Effective communication about assignments allows for better oversight and management of the contract, upholding the terms agreed upon between the contractor and the City.

Additionally, immediate notification helps the City ensure that all parties involved in the contract are compliant with its requirements and that there are no misunderstandings regarding who is responsible for specific tasks. This practice is essential for the integrity of the contract and helps prevent any disruptions in service or issues during project execution.

The other options present different approaches or steps that may not align with the requirement for immediate communication, as they either imply a delay or a more passive role in the notification process.