Answer:
A. That ancient land was located in the Middle East, a hot and sunny part of the world.
Explanation:
Options B through D simply do not make any sense. They overuse words, and are far too long. Sentence 2 starts off with "That ancient land was located in the Middle East." So it would make sense to start the revised sentence that way. Add "The Middle East" to sentence 1, and there you go.
Explanation:
Q) Who is Ben Gunn? How had he survived on the island for so long?
Ans) Ben Gunn is an ex-crewman of Captain Flint's who has been marooned for three years on Treasure Island by his crewmates, after his failure to find the treasure without the map and he was forced to survive on his own by killing and preserving goat meat and his obsession with finding Flint's treasure