Concept:Salinity is the total amount of dissolved salts in a body of water, usually measured in parts per thousand or percentages.Explanation:The Dead Sea is a hypersaline lake, not a sea connected to the ocean.Its salinity is about 34%, which is nearly 10 times saltier than normal seawater.The Red Sea has salinity around 4%, while the Mediterranean Sea is about 3.8%.The South Atlantic Ocean has average salinity of about 3.5%.Answer:B. Dead Sea