Which one of the following would be a lyric poem?

The first. Lyric poetry tends to be characterised by shortness, rhythm and rhyme, although these aren't definitive. Generally it isn't too long and sounds 'musical', almost like it could be lyrics to a song, it's a lyric poem. Neither are particularly good examples of lyric poetry, lacking strict metre and form, but the first is more musical and has more form, especially in the first two stanzas.