What is the main economic activity in the outback of Australia?

The correct response identifies agriculture as a primary economic activity in the outback of Australia. This region is characterized by its vast, arid landscapes where cattle grazing and sheep herding are prevalent. The outback's extensive land offers opportunities for pastoral farming, making it ideal for raising livestock, particularly sheep for wool production and cattle for beef.

While mining is indeed significant in some areas of Australia, especially in the mineral-rich regions, the outback encompasses much more grazing land that supports agricultural practices. Tourism does occur in the outback, focusing on natural attractions and cultural experiences, but it does not match the scale of agricultural output. Manufacturing is generally more concentrated in urban areas, as the outback lacks the infrastructure and population density needed for such activities.

Overall, agriculture stands out in the outback due to the suitability of its land for extensive livestock rearing, cementing it as a dominant economic activity in this region.