The smallest continent is Australia. Therefore, the correct answer is (A) Australia. Australia is both a country and a continent, and it is often referred to as the "smallest continent" due to its relatively small landmass compared to other continents.

The five oceans from smallest to largest are: the Arctic, Southern, Indian, Atlantic and Pacific.

Africa is known as the "Dark Continent" because it was unexplored for a long time. The term was coined by Welsh journalist and explorer Henry Morton Stanley in his 1878 travelogue. Stanley considered Africa to be mysterious and poorly known. 

The Strait of Gibraltar connects the Atlantic Ocean with the Mediterranean Sea and separates Spain on the European continent from Morocco on the African continent.

Auckland, city, north-central North Island, New Zealand. The country's most populous city and its largest port, Auckland occupies a narrow isthmus between Waitematā Harbour of Hauraki Gulf/Tīkapa Moana (east) and Manukau Harbour (southwest).