Which issue in developmental psychology is represented by viewing development as climbing a staircase? stability and change genetics and environment nature and nurture continuity and stages?

This is the continuity and stage theory. In this viewpoint, development takes place gradually, with the person getting to a certain level of mastery, staying there for a period, then having breakthroughs that take them to another, higher level of accomplishment. Only after having learned the one tactic does the person become able to learn the next, more complex, step.