Explanation:

Continental Drift Theory

• Continental drift theory deals with the distribution of the oceans and the continents. It was first suggested by a German meteorologist, Alfred Wegener in 1912.
• According to the theory, all the continents formed a single continental mass- Pangea and mega ocean- Panthalassa surrounded it.
• Around 200 million years ago Pangaea started splitting and broke down into two large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively.
• Subsequently, Laurasia and Gondwanaland continued to break into various smaller continents that exist today.

Hence option 1st is correct.