What statement best describes American federalism since the 1930?

Since the 1930s, American federalism has evolved into a more cooperative model, characterized by increased collaboration between state and federal governments, particularly in response to economic challenges and social issues. The New Deal era marked a significant expansion of federal authority and programs, leading to a greater federal role in areas like social welfare, civil rights, and regulation. This shift has often resulted in a complex interplay of state and federal powers, with ongoing debates about the balance between them. Overall, federalism has become more intertwined, with both levels of government working together to address national and local concerns.