Which passage from Kennedy’s inaugural address is an example of an allusion? “To our sister republics south of our border, we offer a special pledge—to convert our good words into good deeds—in a new alliance for progress . . . .” “But this peaceful revolution of hope cannot become the prey of hostile powers.” “ . . . a call to bear the burden of a long twilight struggle, year in and year out, ‘rejoicing in hope; patient in tribulation’ . . .” “If a free society cannot help the many who are poor, it cannot save the few who are rich.”