Question

pangaea
335 million years ago
though there are currently seven continents, it is believed that all the
land on earth was once joined as one big select
select
mighty continent
supercontinent
colossal continent
jumbo continent

Explanation:

The image and text reference the ancient single landmass that predates today's continents. The scientific term for this unified landmass is the term that matches the provided options and geological terminology.

Answer:

supercontinent