Milky water in green coconut is

The correct option is B Liquid endosperm

The endosperm is the tissue produced inside the seeds of most of the flowering plants following fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. Coconut endosperm is coconut water, the liquid endosperm of green coconuts. It has been freeze dried to a free-flowing powder form using a patented lyophilization process which produces a stable composition retaining the inherent biological activity of its nutrients and growth factors. So, the correct answer is 'Liquid endosperm'.