After asking your question, if more than one person replies, you can see which one is most accurate for you and mark their reply as the most brainliest answer
The altitude ranges from 500 ft to 11500 ft
~Hello there! ^_^
Your question: What waterway is the most significant to the regions due to its vast resources..?
Your answer: Tigris River is the water way that is the most significant to the regions to its vast resources.
The answer is option C.
Hope this helps~
