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