Question

which of the following has the lowest salinity?
ocean
marine
lake
estuary

Explanation:

• Oceans and marine environments are generally salty.
• Estuaries are areas where freshwater meets saltwater, so they have moderate salinity.
• Lakes, especially freshwater lakes, have the lowest salinity as they are mainly fed by freshwater sources with little to no salt content compared to the other options.

Answer:

Lake