Explanation
According to the PMBOK Guide, project communication management involves the processes of planning, managing, and monitoring project communications. The project manager is responsible for ensuring that the communication needs of the project stakeholders are met and that the information is timely, clear, and consistent. One of the tools and techniques for planning communications is communication requirements analysis, which involves determining the information needs and preferences of the stakeholders. The project manager should ask the project sponsor what sort of information is needed and agree on a frequency for the communication, based on the project objectives, risks, and issues. This will help the project manager to tailor the communication plan to the project sponsor's expectations and to avoid over- or under-communicating.
References:
PMBOK Guide, Sixth Edition, Chapter 10: Project Communication Management, pp. 361-395.
PMP Exam Prep Coursebook, Chapter 10: Project Communication Management, pp. 10-1 - 10-14.