ʻUlu / Breadfruit
It is the traditional variety of breadfruit grown through the Hawaii archipelago for centuries. It was one of the ‘canoe plants’ brought by early Polynesian settlers from the Society Islands to Hawaii centuries ago.
There are numerous chants, proverbs, and legends about breadfruit. In one famous legend, the god Ku, fell in love with a human woman, married her, and raised a family. During a time of terrible famine, he transformed himself into a breadfruit tree to feed his family. The small root shoots that grew from the tree were spread to family and friends and the source of all ‘ulu trees in the islands.
Pūlehu was defined earlier in this lesson as "baked/broiled/grilled." The choose one term over another, then, seems way too random to exclude either of the other choices as correct.