Final answer:
In cooperative federalism, cities and states must comply with federal laws and regulations to qualify for federal grant money.
Step-by-step explanation:
In cooperative federalism, in order to qualify for federal grant money, cities and states must comply with federal laws and regulations. This means that they have to adhere to the legal requirements and guidelines set by the federal government. By complying with federal laws and regulations, cities and states can receive funding and support for various programs and initiatives.