The focus on jobs is obviously vital (A)/ peripheral (B).
At the root of the crisis is the step (A) / steep (B) fall in the prices of agricultural goods.
Growth can come about without any substantial (A) / sustainable (B) job-creation in the formal sectors of the economy, but through improvements in productivity.
vital means important peripheral means unimportant step means move, pace, stairs steep means sharp, abrupt substantial means significant sustainable means able to be maintained at a certain rate or level