Why were some of the delegates at the Philadelphia Convention supporters of the anti-federalist style of government?

The delegates were worried that too strong of a centralized government would undermine the will of the people.

The delegates were worried about the tyranny of the masses.

The delegates were worried that without a federalist government, there would be no central government to hold the nation together.

The delegates were worried that individual states would have too much power without a strong central government.

The delegates felt that only a federalist government would be able to control a population as large as that of the United States.