The image below may help you (ʘᴗʘ✿)...
I think its a and b, but i dont know what kind of rock it is. my guess is a metamorphic or sedimentary.
Answer:
1. chondrichthyan
2 lateral line system
3. lobe fins
4 operculum
5 ray finned fish
6 swim bladder
Explanation:
A fish with a flexible cartilage skeleton is defined as a chondrichthyan
A lateral line system is a column of organs that are sensitive to small change in water pressure
Fish with strong pectoral and pelvic fins with rod-shaped bones are known as lobe fins
The operculum movement helps certain fish to breathe without swimming.
A fish with a bony skeleton and long, flexible fins is defined as ray-finned fish
A swim bladder is the gas-filled bag used in several fishes.
