Read the passage.

Our region has experienced a record drought this year. The water level in the local reservoir has dropped by several feet. As a result, Councilman Garcia is proposing a water ban this summer. The ban would limit how often people can water their yards. There are several ways this ban will be effective.

To improve the argument that the ban will be effective, what would be the best fact to add?
a fact about Councilman Garcia
a fact about the history of the region
a fact about the impact of the drought
a fact about the creation of the reservoir