; and (iii) to stimulate cooperation between statewide and local adjustment and diversification efforts. (C) The Secretary may also make grants, conclude cooperative agreements, and supplement other Federal funds in order to assist a State, Tribal, county, or local government in enhancing the capabilities of the government to support efforts of the Department to privatize, contract for, or diversify the performance of family support services of the Department in cases in which the capability of the Department to provide such services is adversely affected by an action described in paragraph (1). (5) Use of funds for non-Federal contribution Funds provided to State, County, Tribal, and local governments and regional organizations under this section may be used as part or all of any required non-Federal contribution to a Federal grant-in-aid program for the purposes stated in paragraph (1). (6) Timeline for approval or rejection (A) To the extent practicable, the Secretary shall inform a State, Tribal, county, or local government applying for assistance under this subsection of the approval or rejection by the Secretary of the application for such assistance as follows: (i) Before the end of the 7-day period beginning on the date on which the Secretary receives the application, in the case of an application for a planning grant. (ii) Before the end of the 30-day period beginning on such date, in the case of an application for assistance to carry out a community adjustments and economic diversifications program. (B) If an application under this paragraph is rejected by the Secretary, the Secretary shall promptly inform the State, county, Tribal or local government of the reasons for the rejection of the application. (c) Research and technical assistance The Secretary may make grants to, or conclude cooperative agreements or enter into contracts with, another Federal agency, a State, Tribal, county, or local government, or any private entity to conduct research and provide technical assistance in support of