Final answer:
When saline is passed through a column in a generator, the most common output is pure water.
Step-by-step explanation:
When saline is passed through a column in a generator, the most common output is pure water. This is because the column in the generator is designed to remove impurities from the saline solution, leaving only pure water behind. The process typically involves ion exchange, where ions from the saline solution are exchanged with ions in the column, resulting in the removal of impurities and the production of pure water.