Which settlement is recognized as the first recorded in the sister islands?

Cayman Brac is recognized as the first recorded settlement among the sister islands of the Cayman Islands. Historically, Cayman Brac was the first of the islands to be settled due to its proximity to the mainland and its more sheltered geography, which made it a more favorable location for early settlers. The natural resources available, such as timber and the island's strategic position for fishing and trade, further contributed to its early colonization compared to other islands.

In contrast, George Town is the capital of Grand Cayman and developed later as a significant port town. Little Cayman, while an important part of the Cayman Island chain, had a much smaller population and was not developed until after Cayman Brac. West Bay, located on Grand Cayman, also came after the establishment of Cayman Brac. Thus, the historical significance of Cayman Brac as the earliest recorded settlement makes it the correct answer.