Which feature of the constitution was eventually created as a result of anti-federalists’ efforts?
a. a bill of rights
b. provisions for state sovereignty
c. a preamble
d. provisions for elections

I choose letter B. provisions for State sovereignty.  Many anti-federalists are not in favor of the government encroaching on the rights of their states.  This came from their resentment of British rule where they were not represented in government.  This is why they want smaller governments to prevent their intervention in their respective states.

dude have you found the answer? i go to connexus as well but i think the answer is prime minister