(a) (b) (c) (d) (2) Committees may be appointed(a) (b) (3) a Public Appointment Standing committee a finance and Public Accounts Standing Committee; a Standing Committee of Privileges; a Standing Committee on Defence and Security, and such other standing or order committees as it considers necessary for the exercise of its functions. to investigate or inquire into the activities or administration of ministries or departments of the Government and such investigation or inquiry may extend to making proposals for legislation or to investigate any matter of Public importance. For the purpose of effectively performing its functions, each of the committees shall have all of the powers, rights and privileges as are vested in the High Court at a trial in respect of (a) enforcing the attendance of witnesses and examining them on oath, affirmation or otherwise; (b) compelling the production of documents; and (c) the issue of a commission or request to examine witnesses abroad. Contempt of the 110. Natonal Asembly Any Act or omission which obstructs or impedes the National Assembly in the performance of its functions or which obstructs or impedes any member or officer of the National assembly in the discharge of his or her duties of affronts the dignity of the National Assembly shall be a contempt of the National Assembly and, in addition to any liability in respect thereof under the criminal law, the offender shall be liable to reprimand or admonition by the National assembly, and if the offender is a member of the National Assembly, suspension or expulsion from the National Assembly. The National 111 Assembly service (1) There shall be a National assembly Service to provide services and support for the National Assembly. The National Assembly Service shall form part of the public service and its members shall be appointed by the National assembly after consultation with the Public Service Commission (2) The National Assembly shall establish an authority to supervise the National assembly Service. The authority shall consist of-