Correct options: (1) It gave land to adult US citizens and (4) It required settlers to meet conditions to keep their land.
The Homestead Act opened up settlement in the western United States, allowing any Adult American citizens (including men, women and freed slaves) to put in a claim for up to 160 free acres of federal land. In exchange, settlers had to pay a small fee and live there for five years consecutive to keep the land, that is to say, get the ownership. They also had the option to buy it from the government after six months of residence.
