The only answer that makes any sense is C. The British Empire was the sole enemy of the French, fighting them and winning in the Seven Years War. While I am completely unaware of what campaign you are referencing, General Burgoyne partook in many over his years as a British officer, I am certain alliance with the French and splitting New York and Canada were not one of them.
Answer:
The largest increases in heavy precipitation events on land are expected to occur over central Africa and South Asia
A Historian would look for a primary source (option d. ) - the definition of a primary source is that it was written at the time of the event, and not later (this is the secondary choice).
