Scientists have discovered and analyzed a huge number of fossils that represent a wide variety of species. What type of evidence for evolution is provided by the fossil record?

A. Incomplete evidence for evolution, because of the many gaps that remain in the fossil record
B. Weak evidence for evolution, because fossils show that modern species are almost the same as ancient species
C. Strong evidence for evolution, because sequences of fossils show how modern species evolved from ancient ancestors
D. Strong evidence for evolution, because fossils show that ancient species were smaller, simpler versions of modern species