Please help, ASAP, being timed!!! Will mark brainliest!!!
What were the benefits of changing the dam's construction? Check all that apply.

1.) It would deliver more water for irrigation.
2.) It would help protect homes from river overflow.
3.) It would earn money to cover construction costs.
4.) It would lead to the creation of a second reservoir.
5.) It would require fewer workers to complete construction.
6.) It would store water all the way to the Canadian border.