The single Russian port that's not frozen over for part of the year is located on the

a. Mediterranean Sea.

b. Pacific Ocean.

c. Black Sea.

d. Baltic Sea.

The Russian port that is not frozen over for part of the year is located on the Mediterranean Sea.

There is only two ports that are not frozen.

-Vladivostok, Pacific Ocean

-Murmansk, Arctic Ocean

Answer:

B. Pacific Ocean