In which sentence does the prepositional phrase act as an adjective
a. in the morning, we rested in bed.
b. we bought cookies in the red package
c. during the day, peter played with the cat
d. my sister is good at dancing

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.

i'd say the answer is nuisance. i hope i .