Which Statement Illustrates Lamarck's Theory on the Mechanism of Evolution

Which statement illustrates Lamarck's theory on the mechanism of evolution?

A) Giraffes with longer necks survived and reproduced faster because they could reach a better food source.
B) Plants that can survive in less light will become the dominant species in shaded areas.
C) Birds with bright colors will attract more mates and pass on the colorful plumage.
D) Fish with coloration that matches the river bottom they inhabit will survive to reproduce.
E) A man who routinely shaves the hair off his head will have sons who become bald.