Question

which of these is most likely to become a carbon film?
a dinosaur leg bone
a sea creatures shell
a flowering plant
a tree trunk

Explanation:

Carbon - films are formed when organisms with soft - parts are buried in sediment and the organic material is compressed and heated, leaving behind a thin film of carbon. Flowering plants have more organic material that can be transformed into carbon - films compared to hard - structures like bones and shells. Tree trunks are larger and may not preserve as easily as smaller, more delicate flowering plants in the process of carbon - film formation.

Answer:

a flowering plant