Explanation:

Tristan da Cunha

• Archipelago: It is a small chain of islands over 6,000 miles from London in the South Atlantic.
• The territory includes four main islands, the largest of which is Tristan da Cunha, located 2,810 kilometers west of Cape Town, South Africa. 
• The island group was discovered in 1506 by a Portuguese admiral, Tristão da Cunha.
• Britain took possession of Tristan da Cunha in 1816, establishing the territory’s first permanent settlement. 
• The waters around Tristan da Cunha serve as a feeding ground for the critically endangered Tristan albatross and endangered yellow-nosed albatross.
• The island group is also home to the World Heritage Site of Gough and Inaccessible Islands, which is one of the most important seabird islands in the world.
  After joining the UK’s Blue Belt Programme, it will become the largest no-take zone in the Atlantic and the fourth largest on the planet. This means fishing, mining and any such activities will not be allowed.

Hence only statements 2&3 are correct.