The farmers wrote the constitution knowing that needs and customs would change overtime what techniques did they use to ensure that the constitution would in fact be relevant for hundreds of years

The framers gave the federal government the ability to change (aka amend) the Constitution over time.

Explanation:

the answer would be c

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.