I believe the answer B but double check to that I dont want to steer you in the wrong direction.
Answer:
Algae Blooms
Explanation:
Algae bloom is a rapid accumulation proteins and amino acids that creates the generation of algae in freshwater or marine water ecosystem as a result the discoloration of the water takes place. The blooming can influence animals and sea creatures in harmful ways as they tend to block the sunlight and deplete the oxygen levels and excessive blooming can be seen as an example of Red tides caused by pigmented algae.
The person on top got the correct answer I think
