HELL Study the map of the route of the Panama Canal.

A map titled Panama Canal and Lock System. A line shows the canal. Gatun Lake and Alajuela Lake are labeled. From left to right are the Gatun Locks, Pedro Miguel Locks, and Miraflores Locks. Panama City is shaded to the right of the Miraflores Locks. La Chorrera is shaded to the right of the Miraflores Locks. Colon is shaded to the right of the Gatun Locks.

What was the purpose of creating Gatun Lake during construction of the canal?

It got rid of mosquitoes and reduced rates of malaria.
It reduced the amount of excavation required to build the canal.
It allowed for increased tourism due to recreational activities on the lake.
It was one of the conditions set by Panama for selling the land to the US.