Provision of Guarantee and Security. Any Person which is required to be, or which the Borrower designates to be, a Material Subsidiary shall, within the timeframe required by Section 9.1(u), provide the Loan Party Guarantee and Security required to be provided pursuant to Section 6.1, together with such supporting resolutions, corporate certificates and legal opinions as the Agent may reasonably request, all in form and substance satisfactory to the Agent, acting reasonably.