1i know what the caged bird feels, alas! when the sun is bright on the upland slopes; when the wind stirs soft through the springing grass, and the river flows like a stream of glass; when the first bird sings and the first bud opens, and the faint perfume from its chalice steals-- i know what the caged bird feels! what two things are compared in a simile in the first stanza of this poem? a) a bird and the sun b) a bird and a river c) perfume and springing grass d) the river and a stream of glass