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