The correct answer is A) they were excellent sailors.
The reason that enabled the Lapita people to migrate to the islands in Oceania was that they were excellent sailors.
The Lapita people were people from the area of Taiwan and East Asia that were very good sailors and could navigate through the ocean and its complicated conditions. They are considered the original settlers in the Polynesia islands, around 1600 BCE and 500 BCE. Previously, they had arrived in New Guinea, Bismark Archipelago, Fiji, and the Solomon Islands. The reason that enabled the Lapita people to migrate to the islands in Oceania was that they were excellent sailors.