A new type of worm was discovered in some bananas on a cargo ship.

The correct option is Eukarya.

Explanation:

A prokaryotic organism does not contain membrane-bound organelles. Bacteria and archaea both are prokaryotes as they lack membrane-bound organelles. These organisms also lack a well-defined nucleus.

Eukaryotes have membrane-bound organelles. Worms have membrane-bound organelles and also have a well-defined nucleus in their cells.

In fact, every organism other than bacteria or archaea is considered to be eukaryotic. Hence, the worm discovered in some bananas on a cargo ship will be a eukaryote.