The Suez Canal, located in Egypt, is a significant waterway that provides the shortest maritime route between Europe and the lands lying around the Indian and Pacific oceans, including Mumbai.

Option 1: Alexandria- Alexandria is in Egypt which is on the other side of the Suez Canal from Mumbai. Therefore, one has to pass through the Suez Canal to get to Alexandria from Mumbai.

Option 2: Suez- Suez is a seaport city in north-eastern Egypt, located on the northern coast of the Gulf of Suez (a branch of the Red Sea), near the southern terminus of the Suez Canal. Given that Suez is approximately at the same location as the Suez Canal, you would not need to pass through the canal to reach here from Mumbai by sea.

Option 3: Port Said- Port Said is also in Egypt. It is located at the northern end of the Suez Canal, thus, to reach there from Mumbai one would have to pass through the Suez Canal.

Option 4: Benghazi- Benghazi is in Libya. To reach Benghazi from Mumbai, one would have to pass through the Suez Canal, then proceed westward along the Mediterranean coast.

Therefore, for Suez, the answer provided is