23.— (1) The Chief Executive shall, whenever required in writing by a 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 regularity and propriety of the transactions recorded or required to be recorded in any account kept under section 22(2),

(b) the economy and efficiency of the Authority in the use of its resources,

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

(d) any matter affecting the Authority 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), (b) or (c)) that is laid before Dáil Éireann.

(2) In giving evidence to the Committee 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.