What role do the icons play in the bottom half of the informational text

If that is suppoused to be a fact i really like it

That huge volcanoes  can  be found here? from the air,  you  see that it covers a huge area, about 14 million square kilometers   antarctica  is just slightly larger than  another  continent in the southern it is  located  on the coast and is 4,876 meters (16,000 feet) tall. under the surface of  antarctica, all is  notcold and quiet.

The correct answers are1) d2) d3) d4) b