The correct answer to what are the third gift mentioned in the poem "Love After Love", besides wine and bread, is C. Your heart.
The poem talks about <em>coming back to oneself and loving oneself again</em>. In this passage <em>"Give wine. Give bread. Give back your heart to itself, to the stranger who has loved you"</em>, the author makes <em>a list of gifts one can give himself or herself in a moment of reencounter.</em> Thus, the correct answer to which would be the third gift given in the poem "Love After Love" is C. Your heart.
The correct answer couldn't be <em>A. A smile</em>, because that is, according to the poem, <em>how one would greet himself</em>. <em>"And each will smile at the other's welcome".</em> A smile, thus, would be <em>a greeting, not a gift</em>. So, the correct answer couldn't be A. A smile.
The correct answer couldn't be<em> B. Love letters,</em> because the love letters are, in the poem, what <em>one would find when they sat</em> and started feasting on their lives. <em>The letters are already on a bookshelf</em>, they just have to be taken down: <em>"Take down the love letters from the bookshelf"</em>. Hence, the correct answer couldn't be B. Love letters, because <em>the love letters aren't gifts.</em>
The correct answer couldn't be <em>D. Photographs</em>, because the photographs in the poem, <em>along with the love letters, are already there</em> to be rediscovered. <em>They had already been left on a bookshelf before</em>. So, <em>they are not gifts</em>, and, therefore, the correct answer couldn't be D. Photographs.