The best reasoning for the method Jenna and her family should choose is:
reverse osmosis because it requires low maintenance, and removes all contaminants such as bacteria and chemicals.
Reverse osmosis is effective in removing many contaminants, including bacteria and chemicals. While it does require some maintenance, it is generally considered to have low upkeep compared to other complex filtration systems. However, it is important to note that reverse osmosis systems do have filters that may need to be replaced periodically, and they do require some water pressure to function effectively.
Ultraviolet (UV) radiation is also effective in disinfecting water but does not remove chemical contaminants. It requires energy to operate and typically works in conjunction with other filtration methods. Therefore, the reasoning supporting reverse osmosis is more aligned with the criteria of removing a wide range of contaminants effectively.