Answer: b) the customer feedback and scope verification
Step-by-step explanation: Feedback from the customer is the response that is gained from the customer for the received services .Scope verification is done to confirm about the work goods and services review and also assures about the whole process is completed with satisfaction.
The project team should consider the feedback of customer as well as scope verification factor for review which will tell them about the project's scope and working admired by customers.
Other options are incorrect because project charter is for view the whole project with all aspects. Organization chart of project helps to organize the project and communication plan is responsible for communication of the project members with client in efficient way.Thus, the correct option is option(b).