A is the correct answer since pandemic means spread worldwide, or to a whole country.
In this sentence, "which lasted two hours" is an adjective clause because it describes the school play by telling how long it lasted. Also, adjective clauses often start with words such as "who", "that", "which", or "when", along with others.
The following sentence best paraphrases the passage:
"Swift maintains that, if asked, people who have lived in poverty their entire lives would say that they would rather have been sold for food at one year of age."