I believe the description that best relates to a gulf is:
A. a large area of salt water that is surrounded by land on three sides
Explanation:
A gulf is basically an inlet, a part - an "arm" - of the ocean that is almost completely enclosed by land. That means it has land on three sides. On the fourth side, there is an opening that connects that enclosed water, so to speak, to the rest of the ocean. It is as if there was an indentation in the coast that allows the water to come in.
I disagree because we all know that the earth isn't flat and way back when when this happend they didn't had all of the tecnolgy that we have today so then how did he think that the earth was flat even though after the one persons presentation of the earth that he was still questioning the person that was giving the presentation.