Ecuador's extraordinary topographical diversity comprises snow-capped peaks reaching an altitude of more than 20,000 feet and rain-forest ravines descending steeply toward the Amazon basin, supporting an equally astounding diversity of wildlife species.
A. diversity comprises snow-capped peaks reaching an altitude of more than 20,000 feet and rain-forest ravines descending steeply toward the Amazon basin, supporting
-Supporting doesn't seem to modify diversity clearly so A is wrong
B. diversity, comprising snow-capped peaks reaching an altitude of more than 20,000 feet and rain-forest ravines that descend steeply toward the Amazon basin, supports
- Supports clearly tells what diversity does. ,comprising......Amazon basin acting as a modifier explains the diversity. Seems Correct
C. diversity comprises snow-capped peaks that reach an altitude of more than 20,000 feet and rain-forest ravines and descends steeply toward the Amazon basin, supporting
-For the reason stated in A and because of unnecessary "and" C is incorrect
D. diversity, comprising snow-capped peaks reaching an altitude of more than 20,000 feet and rain-forest ravines and descending steeply toward the Amazon basin, supports
- Unnecessary usage of and between ravines and descending makes the modifier comprising ..... basin non parallel . So D is incorrect
E. diversity comprises snow-capped peaks reaching an altitude of more than 20,000 feet and rain-forest ravines descending steeply toward the Amazon basin, is supporting
- Present Continuous is the wrong tense here. So E is wrong