How is Booth's conversation with the Garrett family ironic? He explains forensics to them.
He analyzed his own crime.
He gives advice on relationships.
O He discusses how the Union might be right.
He expresses his sincere admiration of Lincoln.

Ok

Explanation:

Booth told Herold he wanted to spend another night at the Garretts'. Herold thought this was a mistake. The fugitives were surprised, however, when John Garrett, who was overseeing the farm while his father was away on business, refused to let them stay another night.Booth and Herold rode to the house of Dr. Richard Stuart. ... Booth's experience with Dr. Stuart was, perhaps, his sharpest disappointment in his expectations for Southerners to stand by him in upholding Southern principles.

the answer is irony!

awnser: william shakespeare was an english poet, playwright, and actor, widely regarded as the greatest writer in the english language and the world's pre-eminent dramatist.