The correct option is A
Around 500 million years ago (mya), invertebrates (non-chordates) were formed and they were active.
The jawless fishes probably evolved around 350 mya.
The fishes (lobefins) with stout and strong fins could move on land and go back to water. These lobe-finned fishes evolved into the first amphibians. So, 2 is an incorrectly matched pair.
The first amphibians were present in the Devonian period of the Paleozoic era. Amphibians later evolved into reptiles. The first reptiles were seen during the late Carboniferous period of the Paleozoic era.
In the Triassic period of the Mesozoic era, development of reptiles took place along with the appearance of first mammals. The first mammals were more like shrews. They were small in size as per their fossil studies.
Hence, 1 is a correctly matched pair.
It is believed that birds evolved from reptiles. The bipedal dinosaurs are considered as ancestors of birds. The fossil bird Archaeopteryx provides enough evidence for this. It has both reptilian and avian characters. It was about the size of a crow and possessed feathers and wings like birds. It had a long tail and toothed head like reptiles. Birds were able to fly but feathers were mostly functionless in dinosaurs.
Hence, 3 is a correctly matched pair.