An economic downturn can cause the demand curve to

I think you forgot to give the options in this question. I am answering this question to the best of my capability and hope that it helps you. An economic downturn can cause the demand curve to shift left. During this time actually the demand of a product in the market falls and so the producers have to lower the price of the products as well.

Amendment 10, all power not specifically given to the gov't goes to the states.checks and balances thats the main one.