Answer: A) steering committee
Explanation: Steering committee is the committee that is formed by the people who are usually not the part of project rather they provide guidance,monitoring , alteration information, support etc to the project members.
According to the question, steering committee provides help in setting information systems (IS) priorities by guiding Chief information officer (CIO)of the project so that appropriate alternatives and plan can be made for the project.
Other options are incorrect because discussion forum is used for in-depth and critical thinking. IS (Information system)department is system creating,storing, processing etc of information.Network board 53 is the networking field committee .
Thus, the correct option is option (A).