Where is the only full-sized castle in north america?

Toronto's Casa Loma is the only real full-size castle in a North American city. full-size castle. When Casa Loma was constructed it was North America's largest private residence.

Explanation:

Toronto's Casa Loma is the only real full-size castle in a North American city. full-size castle. When Casa Loma was constructed it was North America's largest private residence.

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;