Which of the following is the best example of how many Pacific islands have adapted to a mix of different ethnic groups?

They have developed national pidgin languages.
They have populations where immigrants make up the majority.
They practice traditional forms of art, dance, and music.
They use many modern technologies, such as computers.

The best example of how many Pacific islands have adapted to a mix of different ethnic groups is that they have developed national pidgin languages. Pidgin languages are a mixture of different languages used for communication between different ethnic groups, and this demonstrates how these islands have adapted and created a new cultural identity that incorporates elements from different ethnic groups.