On his blindness is ................AA Petrarchan SonnetBA Shakespearean SonnetCA HaikuDA LimerickAnswer: A. A Petrarchan Sonnet Read Explanation: The sonnet is composed in Petrarchan style, consisting of an octave and a sestet with a rhyme scheme abba / abba/cde/cde.The poem is an autobiographical son- net in which he expresses his feeling as a blind person. Milton's eyesight began to fade in 1644, and in 1652, when he was 44 years old, he became completely blind. Read more in App