Final answer:
The oldest rocks on the ocean floor are found along the mid-ocean ridges, while the newest rocks are found near the mid-ocean ridge where new rocks are being formed.
Step-by-step explanation:
The oldest rocks on the ocean floor are found along the mid-ocean ridges, where new oceanic crust is formed. The process of seafloor spreading pushes older rocks away from the ridge, creating a pattern of increasingly older rocks as you move away from the ridge. The red star on the map should be placed near the mid-ocean ridge where new rocks are being formed and are therefore the newest. The green star should be placed farther away from the ridge, where the rocks are older.