Final answer:
The 12-bar blues structure is a musical chord progression and does not have a direct equivalent in poetic stanzas like quatrains or tercets.
Step-by-step explanation:
The structure most closely associated with the 12-bar blues is not typically related to literary stanzas, but rather to musical composition. The 12-bar blues is a chord progression used in many blues songs, generally consisting of 12 measures (bars) and following a specific pattern using the I, IV, and V chords of a given key. However, in the context of literature or poetry, when one refers to a structure resembling the 12-bar blues, it might involve the repetition and variation found in blues music, which could influence the structure of stanzas in a poem. This might result in stanzas that reflect themes of call-and-response, where the first line is repeated in the second line and a concluding line caps off the stanza, but there is no strict equivalent in traditional poetic forms. Therefore, among the options provided, none exemplify the structure most closely associated with the 12-bar blues, as poetic stanzas like quatrains or tercets follow rules that don't directly correspond to musical blues patterns.