Final answer:
Byron did not express a longing for the return of the French monarchy in 'Canto III' of 'Childe Harold's Pilgrimage'; hence the correct answer is False.
Step-by-step explanation:
The statement in the question regarding Byron's views in 'Canto III' of Childe Harold's Pilgrimage is inaccurate. Lord Byron was known for his critical views of Napoleon, and there is no clear evidence within 'Canto III' that he longed for the return of the French monarchy. Therefore, the correct answer to the student's question is: B. False.