 
 <prompt> ```Di fossils wey dem find for di oldest layers of sedimentary rock na which kain organisms dey form am?
Available options:
- only organisms wey dey live for sea;
- only organisms wey dey live for land;
- only organisms wey dey live for air;
- organisms wey dey live for land, sea and air;``` <response>: ```only organisms wey dey live for sea``` 