Select the correct answer from the drop-down menu.
Choose the correct meaning of chasm in the passage.
Before There Was Ice
Scientists discovered a chasm below the icy surface of Greenland. Similar to the Grand Canyon, this BLANK
stretches out 460 miles long and is 2,600 feet deep. Scientists believe that the massive gorge may have formed long ago before the country became covered in ice.
A. abandoned city
B. isolated island
C. cavernous opening
D. icy ocean