I would assume its c but i cannot be 100% but im 100% sure its A or C because cool air falls warm air rises
I can’t answer that but I can help you by saying that every river or source of water connect to the ocean
I believe it is Istanbul with 11,400,000 inhabitants located in Turkey.
C. a delta. Because a delta is the only one of those choices to where it is formed at the mouth of a river