Answer:
Bluff erosion in the Great Lakes is most severe a) during storms .
Explanation:
Bluff erosion -
The bluff erosion is most severe during stormy weather . The major problem is not the gradual erosion but the sudden collapse or destruction during the storm .
Factors affecting the bluff erosion are as follows ,
1. Heavy rain fall .
2. Wave erosion .
3. Removal of vegetation from the coast .