The correct option is D Archaeopteryx
Archaeopteryx is one of the oldest known prehistoric birds, dating from the Jurassic period. It had teeth, feathers, three-claws on each,a flat sternum (breastbone), belly ribs (gastralia) and a long, bony tail. Like modern-day birds, it had feathers, a lightly-built body with hollow bones, a wishbone (furcula) and reduced fingers. It is a connecting link (missing link) between reptiles and birds. Hence, option D is correct.