What did anti-federalists fear would happen if the constitution became law?

a congress would have too much power over states.
b states would have too much freedom to make their own laws.
c congress and states would have equal power.
d states would control which laws congress made.

I believe that it is b I hope that helps

A.Congress would have too much power over states.

Explanation:

one of the major compromises in the constitutional convention was between the small states and big states. the small states wanted each state to have the same number of representatives in congress. the big states wanted representation based on population.