The main economic activity in most low-income countries is:

The main economic activity in most low-income countries is agriculture. Agriculture refers to breeding animals to provide food and farming for different type of food and fiber. Those that live and work in low-income countries do a lot of farming to feed and produce items for their economy. 

Iam pretty sure a because if u are exiting you need to know the exit plan

Dwould be the correct answer to this problem