Compare a postulate and a theorem.

a.) postulate and a theorem are both understood as true without proof.
b.) a theorem is understood as true without proof, while a postulate must be proven.
c.) a postulate is understood as true without proof, while a theorem must be proven.
d.) both must be proven.

the answer is:  

he is voicing feelings shared by all humans regardless of race.

in paul laurence dunbar's poem "we wear the mask," he replicates the words mask and we to emphasize how people in general -not just black americans- hide their true feelings. he suggests the masks cover people's faces and eyes, which are the main parts that display their emotions. he also thinks people's pain conceal behind those masks, so that they cannot see reality and nobody is able to see one another's sorrow.

we should all just get dogs.