The line that includes an allusion in the poem is 'Diego's / love a skull in the circular window,' referencing Diego Rivera.
An allusion is a reference to another work of literature, art, history, or culture within a text. In the poem "Sonnet in Primary Colors" by Rita Dove, the line that includes an allusion is: Diego's / love a skull in the circular window. This line alludes to the artist Diego Rivera and his relationship with Frida Kahlo, symbolized by the reference to the circular window in his artwork.
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