The correct answer is D. Rainbow trout disappear from a stream because of high water temperatures.
Step-by-step explanation:
Thermal water pollution takes place as the regular temperature of a stream, river, lake or any water body is altered which changes oxygen levels in the water and has serious consequences as many organisms can survive only in certain temperatures. This type of pollution has many causes but most of them are related to human activities, for example, deforestation or the use of water by industrial plants.
According to this, the event that is likely a result of thermal water pollution is "Rainbow trout disappear from a stream because of high water temperatures" because in this case the temperature of the water has been altered and this had negative consequences on the environment and in particular on rainbow trout species.