How Do Fossils Support the Theory of Common Descent

Question

How do fossils support the theory of common descent?
A) They are a record of some intermediate types of organisms that document the process of evolution.
B) They can be easily and precisely dated by comparing the rock layers where they are found.
C) They are found equally all over the world, so they explain all our questions about biogeography.
D) They contain complete DNA genomes, so they can be compared to modern organisms.

Accepted Answer

Fossils provide evidence of extinct organisms that represent intermediate forms between different groups of modern organisms. The presence of transitional forms in the fossil record supports the idea that all organisms share a common ancestor and have evolved over time through natural selection.