Answer:
I think It might be deletion mutation
~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~
The answer is Bahrain and Kuwait, both sources provide some evidence.
"https://en.wikipedia.org/wiki/History_of_Bahrain"
"https://en.wikipedia.org/wiki/Sheikhdom_of_Kuwait"
