If something located on the borders of Tibet and Burma was formed by rock folding, then what was formed by rock folding?

Answer choices:
- Something located on the Sun
 - marshes, bogs, and swamps
 - Something located on the border of Tibet and Burma
 - Something located on Venus
 - Something caused by pressure differences
 - Something that take eight minutes to travel to the Earth
 - Something located in the Pacific Ocean
 - soil loss through hurricanes

 

   Something located on the border of Tibet and Burma       