Final answer:
The significant part of 'The Love Song of J. Alfred Prufrock' that is repeated is the reference to the women's discussion of Michelangelo, pointing to the poem's exploration of social dynamics and introspection rather than traditional love themes.
Step-by-step explanation:
The repeated part of 'The Love Song of J. Alfred Prufrock' by T.S. Eliot is A. The women's discussion of Michelangelo. This line is referenced multiple times throughout the poem, creating a leitmotif that speaks to the social dynamics and perhaps the cultural pretensions of the time. The poem as a whole differs from typical themes of a love song; rather than focusing on unrequited love, it delves into deeper issues of self-consciousness, social paralysis, and the complexities of the modern psyche.
Instead of following the conventional theme of love described in Renaissance love poetry, which often centers around the motif 'I love her. She doesn't love me. Oh rats,' T.S. Eliot uses the setting of a love song to explore more existential themes. The poem touches on the nature of relationships and the self in a modern, fragmented world, signifying a departure from the straightforward narratives of traditional love poems and songs.