All of the following statements about cooperative federalism are true except:
a. cooperative federalism ended dual federalism.
b. cooperative federalism has been practiced in the us since 1860.
c. under cooperative federalism, different levels of government work together on programs.
d. cooperative federalism includes welfare and employment programs by the federal government.

B. Cooperative federalism has been practiced in the US since 1860.

Cooperative federalism, or the concept of federalism in which local, state, and federal governments work together to create policies, replaced dual federalism in the 1930s.

B. Cooperative federalism has been practiced in the US since 1860.

Explanation:

the number of senators, and representatives, the state has in congress.