Answer:
El Salvador
Explanation:
While the majority of the republics have both the Caribbean and a Pacific coast, Belize only has a Caribbean coast and El Salvador only has a Pacific coast. Central America comprises the countries south of Mexico and up to Panama.
Oceanic crust is denser than continental crust. Continental crust is more buoyant. :)
Ocean water is most saline in dense seawater.
answer: b. in dense seawater.
The right answer is Mongolia