Final answer:
The first line of Canada's national anthem is 'O Canada! Our home and native land!' It is a patriotic symbol of Canada's identity and values.
Step-by-step explanation:
The first line of Canada's national anthem is A. O Canada! Our home and native land! Canada's national anthem, known as "O Canada," serves as a patriotic symbol that reflects the country's identity, heritage, and values.
This anthem holds a special place in the hearts of Canadians and is sung at a variety of events, from sports games to official ceremonies.