Answer: Please refer to the explanation section
Explanation:
The question incomplete we are required to differentiate events that will shift the demand curve of Boston Lager to the left and events that will not shift the demand curve but the events are not provided in the question. however because it is clear what the question requires i will list Events that cause a shift in the demand curve and events that will not shift the demand curve.
events that will shift the demand curve of Boston Lager to the left
events that will NOT shift the demand curve of Boston Lager