Question

During the days of Dinosaurs mammals had

• A. Already evolved
• B. A size of rats and mice
• C. Both A and B
• D. Not yet evolved

Answer 1

The correct option is A Already evolved

Rise of first dinosaurs in Triassic period and it became large in Jurassic Period.

Egg laying mammals rise in triassic period and therian mammals rise in Jurassic Period.

So, according to this during the days of dinosaurs mammals had already evolved.

So, the correct answer is 'Already evolved'.