What are the factors that would serve as stimuli for erythropoiesis

The factor that would serve as stimuli for erythropoiesis are: Hemorrhage, aerobic exercise, living at a high altitude.

Explanation:

Erythropoiesis is the process in which the body develops red blood cells from erythropoietic stem cells.

The main stimulus to begin erythropoiesis is a decrease in oxygen circulation. This is detected by the kidneys, that will proceed to secrete a hormone called erythropoietin to stimulate the proliferation and differentiation of the precursors of the red blood cells.

Hemorrhage, aerobic exercise, living at a high altitude would all produce a decrease in oxygen circulation.