Of the gas giants which planet has the most predominant rings

 Saturn, which has by far the largest ring system, was known to have rings for a long time.

The answer would be Saturn. although the other gas giants have rings as well, Saturn is best known for it's rings. they are the most easily seen etc.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.