The correct answer is reptiles.
The first land animal that were adapted to live on land were reptiles. The adaptation that took place in reptiles was because they live in water and on land .The waterproof skin was a adaptation to live in water. Their large lungs helped in the breathing. Eggs with waterproof shell so that they can lay eggs in the water.
All these adaptations in the reptiles helps them to survive better in any conditions.
