Concept:Hollow seeds are specially adapted to float on water.
Explanation:Large hollow seeds contain air spaces inside them.
These air spaces make the seeds light and buoyant.
Because of this buoyancy, the seeds can easily stay on the surface of water.
Moving water such as rivers, streams, or floods can then carry them to distant places.
This method of seed dispersal is known as water dispersal.
Wind dispersal suits small, winged, or feathery seeds, not large hollow ones.
Insects and explosive mechanisms are also unlikely for this kind of seed.
Therefore, large hollow seeds are best suited for dispersal by water.
Answer:B. water