After defining the problem that ecompeteusa wants solved, you need to determine what type of research objective to pursue. what type of research objective would be most appropriate given ecompeteusa's research problem? select an option from the choices below and click submit.

How did the percentage of americans living on farms change between 1820 and 1850 a. it lowered as many americans were sold into slavery b. it rated the same as people stopped coming to america c. it grew as more people came to america d. it lowered as many americans went to work in factories