Final answer:
The most unlikely event based on the ant and the grasshopper story is the grasshopper finding a lot of food under the snow. The correct option is c.
Step-by-step explanation:
Based on the story of the ant and the grasshopper, the event that could not happen is c. grasshopper digs under the snow and finds lots of food. In the context of the fable, it's unlikely that the grasshopper, which failed to prepare for the winter unlike the ant, would suddenly find an abundant food source under the snow. This situation is improbable because, generally, food is scarce in winter and grasshoppers are not known to forage for food under snow. The other options such as the grasshopper begging the ant for food, the ant feeling sorry and providing food, or the grasshopper getting weaker without food are all plausible scenarios in relation to the moral of the fable.
The grasshopper effect explains the long-range movement of certain types of pollutants across different regions of the Earth. This environmental phenomenon is unrelated to the grasshopper's incapability to find food in winter.
Food webs depict the interactions between different organisms such as grasshoppers, grass, and other animals. A grasshopper can interact with grass by feeding on it and being a food source for other animals, representing a part of the food web within an ecosystem.
The correct option is c.