21. (1) The chief executive shall, whenever required in writing by the Committee of Dáil Éireann established under the Standing Orders of Dáil Éireann to examine and report to Dáil Éireann on the appropriation accounts and reports of the Comptroller and Auditor General, give evidence to that Committee on—

(a) the economy and efficiency of the Board in the use of its resources,

(b) the systems, procedures and practices employed by the Board for the purpose of evaluating the effectiveness of its operations, and

(c) any matter affecting the Board referred to in a special report of the Comptroller and Auditor General under section 11(2) of the Comptroller and Auditor General (Amendment) Act 1993 or in any other report of the Comptroller and Auditor General (in so far as it relates to a matter specified in paragraph (a) or (b)) that is laid before Dáil Éireann.

(2) In the performance of his or her duties under this section, the chief executive shall not question or express an opinion on the merits of any policy of the Government or a Minister of the Government or on the merits of the objectives of such a policy.