Which of the following is a major Canadian hockey league?

The Ontario Hockey League (OHL) is indeed a major Canadian hockey league as it is part of the Canadian Hockey League (CHL), which is the primary junior ice hockey league in Canada. The OHL serves as an important development league for young hockey players, providing a platform for them to showcase their skills and potentially be scouted by National Hockey League (NHL) teams.

The OHL is widely recognized for its high level of competition and has produced a significant number of professional players who have gone on to achieve success in the NHL. This establishes its role not only in Canadian hockey culture but also in the broader landscape of professional sports within the country. Organizations like the OHL foster talent development at a foundational level, making it integral to the sport's growth in Canada.

In contrast, the other options listed are not hockey leagues. The Canadian Football League pertains to American-style football, Major League Soccer is focused on soccer, and the National Lacrosse League is related to lacrosse. Hence, they do not fit the criteria of being a major Canadian hockey league.