Question

which can be excluded due to the absence of fossil records? (1 point)
○ a dinosaur’s backbone
○ the body of a jellyfish
○ the shell of a crab
○ the shell of a snail

Explanation:

Fossilization requires hard structures (like bones, shells) to be preserved. Jellyfish have soft bodies with no hard parts, so their bodies rarely fossilize. Dinosaurs have bony backbones, crabs and snails have hard shells—these can fossilize. So the jellyfish body is excluded due to lack of fossil records.

Answer:

the body of a jellyfish