Question

Which of the following facts would be used to explain why the influx in migration from the country to cities was helpful for the farming community?

Due to migration, most people lived in cities, and farms better provided for the local communities.
Due to migration, people in cities were able to construct machines that could yield a high crop output.
Due to migration, farm hands were usually young children who were not old enough to work at hard labor.
Due to migration, there was less competition and farmers were able to appropriate large amounts of land for crops.