The Anti-Federalists were most concerned with the fact that the Constitution was giving far too much power to the central government over the states--meaning that they feared the federal government would become tyrannical.
If you can choose more than one answer then choose B&C but if not choose B
The answer you are looking for is option B I hope this helps you.
Maybe the old man is talking about reincarnation and when he returns it’ll be a different time therefore requiring change. Change in science, writing, and overall human advancement.