The correct answer is (c). The Mesozoic Era was the era of reptiles. It was the middle of the three eras of the Phanerozoic eon, and it lasted from 252 to 66 million years ago. The Mesozoic Era is also known as the “Age of Dinosaurs” because dinosaurs were the dominant land animals during this time.
The Palaeozoic Era was the first era of the Phanerozoic eon, and it lasted from 541 to 252 million years ago. The Palaeozoic Era is also known as the “Age of Fishes” because fishes were the dominant animals in the oceans during this time.
The Coenozoic Era is the current era, and it began 66 million years ago. The Coenozoic Era is also known as the “Age of Mammals” because mammals are the dominant animals on Earth today.
The Proterozoic Era was the second era of the Precambrian eon, and it lasted from 2.5 to 541 million years ago. The Proterozoic Era is also known as the “Age of Protists” because protists were the dominant organisms on Earth during this time.