Answer: Primary succession
Step-by-step explanation:
Primary succession occurs in an area that was devoid of life. The area has no soil and therefore cannot sustain life. The main things there are rocks which were just exposed or formed from a volcanic eruption. This is stage A.
As time goes on, plants that can survive in such an area begin to grow and help break down rocks to soil over centuries. This is stage B. More plants will start growing as a result as shown in stage C. As more plants come, they will develop the soil till eventually, the land is able to support the vegetation in stage E.