Final answer:
The statement outlines a sequence of historical events in 19th-century Canadian history that are indeed true, with the Durham Report leading to significant political changes including responsible government and an alliance between two key reformists. The correct option is A.
Step-by-step explanation:
The statement describes a series of historical events related to the political history of Canada during the 19th century.
The Durham Report was indeed a foundational document for the union of Upper and Lower Canada (now Ontario and Quebec) which recommended the Act of Union in 1840 to unite both parts.
This eventually led to the beginning of a political alliance between Reforms Lafontaine & Baldwin, paving the way for responsible government.
The claim that English Canadians set fire to parliament in Montreal is also accurate; this occurred in 1849 in response to the Rebellion Losses Bill. Thus, most of the statement is true, although it provides a simplified version of complex historical events. The correct option is A.