Buckwheat is related to the rhubarb. thus, option D is correct.
What family does buckwheat belong to?
The polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed.
Buckwheat is a pyramid-shaped kernels are similar to grains from both a culinary and nutritional perspective.
It is herbaceous plant of the family Polygonaceae and its edible seeds. Buckwheat is a staple pseudograin crop in some parts of eastern Europe, where the hulled kernels, or groats, are prepared as kasha, cooked and served much like rice. so, option D is correct.
Learn more about rhubarb here:
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