Select the most appropriate option to fill in the blanks.
Reptiles _________ from amphibians. For a long period of 160 million years in earth’s history, reptiles were the dominant form of life on the planet and _________ in an enormous variety of shapes and sizes.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e.evolved; existed.
"Evolved" conveys that reptiles developed from amphibians, and "existed" describes their presence and variety over a long period of time.