What causes the death of game fish in cultural eutrophication? 

A)  salt 
B)  acid deposition 
C)  suffocation from lack of oxygen 
D)  toxic substances in the water

Cultural Eutrophication

The process by which water bodies become enriched with nutrients from human activity, leading to excessive growth of algae and deterioration of water quality.

Game Fish

Describes species of fish targeted for recreational fishing, often subject to specific regulations regarding their capture, to conserve and manage populations.

Suffocation

The condition of experiencing a lack of oxygen supply to the body, often leading to unconsciousness or death.