Question

as she walks, i am never far, stretching out beside her like an inky photocopy. i match her every movement silently, so silently. i am her constant companion, yet i am seldom noticed. except those times—briefly, so briefly, she spots me in the bright sunlight. the speaker of this poem is actually— a shadow the poet the bright sunlight a girl who walks

Explanation:

The poem describes a presence that stretches beside the walker, matches their movements silently, is a constant companion rarely noticed, and is spotted in bright sunlight—all characteristics of a shadow.

Answer:

a shadow