The correct answer is number 4) farming land that was owned by someone else.
During the Great Depression, some people worked as tenant farmers, farming land that was owned by someone else.
That was one of the few options they had in those difficult years. They worked so hard and received low wages. The Great Depression heavily affected the economy of the United States and its citizens, The Great Depression started after the US stock market crash of October 1929. After the crash many people lost their jobs, companies had to close and banks went into bankruptcy.