If another stanza were added to “the caged bird,” which excerpt could best be used to continue the extended metaphor?

the free bird sings
with a joyous song
of the captive life
that kept it safe all along

the caged bird sings
with a fearful trill
of things it craves
outside the sill

the free bird sings
with a fearful trill
of things it craves
outside the sill

the caged bird sings
with a joyous song
of the captive life
that kept it safe all along