Answer:
Talk to his Manager
Step-by-step explanation:
In the decision making process of a project it is essential that communication between the team members and the manager of a project is adequate and also communication between the project sponsor and the project manager as well.
If Charlies does not think he will be able to finish the project by the deadline given to him by the project it is important he communicates in time with the manager and ask for a deadline extension while he tries his best to finish up the project on time