People usually become infected from warm freshwater lakes and rivers. This amoeba likes to live in warm water, including warm lakes and rivers, as well as hot springs. The organism may also be found in warm pools that are not properly chlorinated, and in water heaters, the CDC says.
To dilute a solute in a solution, it is necessary to add a proper solvent for the reaction to occur, and adding more solvent will cause the solution to dilute even more, therefore the best answer will be letter B
