Equality advocates have proposed to enact their own "lockbox" by creating an Opportunity Trust Fund where billions of tax revenues would be protected, used to decrease income inequality, and not be raided by public officials for other purposes. If revenues in the Opportunity Trust Fund were not successfully protected, the billions in tax revenues would be spent on all of the following except: Question 15 options: a) vacation homes and yachts for the wealthy. b) tax cuts for affluent Americans. c) increased military spending. d) improvement in construction on the nations' airports