Answer:
B). Anyone who is truly virtuous or patriotic would not suggest using children for food, so Swift means the opposite of what he says.
Step-by-step explanation:
Verbal irony is demonstrated as one of the most commonly employed literary devices in which there is a sharp contrast between the literal and implicit meaning of the words used by the author.
"A Modest Proposal" is one of the best satires of all time as Swift employs various literary devices like irony, exaggeration, or humor to critique and comment upon the inhumanity of Irish people who were selling their children for food to resolve their economic problems and the brutal British policies.
In the given excerpt, the underlined portions employed by Swift exemplify verbal irony as they convey a very positive idea about the probity and loyalty of Irish people in the literal sense but implicitly, Swift is critiquing and commenting upon the Irish 'gentlemen' who 'destroyed their deer' and 'supply'd by the bodies of young lads and maidens'(selling children for food). Thus, option B is the correct answer.