Question

how long ago do scientists believe the continents formed pangaea? about 135 million years ago about 180 million years ago about 300 million years ago about 4.5 billion years ago

Explanation:

Scientists believe that Pangaea, the supercontinent, formed around about 300 million years ago. The other options are incorrect: 135 and 180 million years ago are related to the breakup of Pangaea into smaller landmasses, and 4.5 billion years ago is around the time the Earth formed.

Answer:

C. about 300 million years ago