18 A majority of all the members of the Regional Assembly shall constitute a quorum to do business, but a smaller number may adjourn from day to day and may compel the attendance of absent members in such a manner and under such penalties as the assembly may provide. The Regional Assembly or any of its committees may conduct inquiries or public consultations in aid of legislation in accordance with its rules. In connection therewith, it shall have the power to issue subpoena or subpoena duces tecum to compel the attendance of and the production of papers, documents, or things by witnesses or persons under investigation by the assembly, itself, or by any of its committees. It shall also have the right to cite witnesses or persons under investigation for contempt for refusal to testify before it or before any of its committees or to produce papers, documents or things required by the assembly or any of its committees. The rights of persons appearing in or affected by such inquiries shall be respected. The Regional Assembly shall keep a journal of its proceedings and a record of its caucuses and meetings. The record and books of accounts of the assembly shall be preserved and open to public scrutiny. The Commission on Audit of the Regional Government shall publish an annual report of the itemized list of expenditures incurred by the members of the Regional Assembly within sixty (60) days from the end of every regular session. SEC. 14. Questioning Cabinet Members and Other Officials. – The Regional Assembly may, in aid of legislation and with the express consent of the Regional Governor, require the presence of the regional cabinet members or their deputies as its rules shall provide, for questioning on matters falling within the scope of their powers and functions. The Regional Assembly may require any regional commission, office, or agency of the central government or national government with offices in the autonomous region to explain matters relating to the exercise of its powers and functions.