except to the extent permitted by the Secretary with respect to services, provide that it shall be in effect in all political subdivisions of the State, and, if administered by them, be mandatory upon them;

provide for financial participation by the State;

either provide for the establishment or designation of a single State agency to administer the plan, or provide for the establishment or designation of a single State agency to supervise the administration of the plan;

provide (A) for granting an opportunity for a fair hearing before the State agency to any individual whose claim for assistance under the plan is denied or is not acted upon with reasonable promptness, and (B) that if the State plan is administered in each of the political subdivisions of the State by a local agency and such local agency provides a hearing at which evidence may be presented prior to a hearing before the State agency, such local agency may put into effect immediately upon issuance its decision upon the matter considered at such hearing;

provide (A) such methods of administration (including methods relating to the establishment and maintenance of personnel standards on a merit basis, except that the Secretary shall exercise no authority with respect to the selection, tenure of office, and compensation of any individual employed in accordance with such methods) as are found by the Secretary to be necessary for the proper and efficient operation of the plan, and (B) for the training and effective use of paid subprofessional staff, with particular emphasis on the full-time or part-time employment of recipients and other persons of low income, as community service aides, in the administration of the plan and for the use of nonpaid or partially paid volunteers in a social service volunteer program in providing services to applicants and recipients and in assisting any advisory committees established by the State agency;