Read the excerpt below and answer the question. Certainly there is, for the American Negro artist who can escape the restrictions the more advanced among his own group would put upon him, a great field of unused material ready for his art. Without going outside his race, and even among the better classes with their "white" culture and conscious American manners, but still Negro enough to be different, there is sufficient matter to furnish a black artist with a lifetime of creative work. And when he chooses to touch on the relations between Negroes and whites in this country, with their innumerable overtones and undertones surely, and especially for literature and the drama, there is an inexhaustible supply of themes at hand. To these the Negro artist can give his racial individuality, his heritage of rhythm and warmth, and his incongruous humor that so often, as in the Blues, becomes ironic laughter mixed with tears. What is the main idea in this excerpt from "The Negro Artist and the Racial Mountain"? African American artists will run out of material to write about. The topic of African American culture has been exhausted in literature. There is still a lot to be written about the African American experience. The African American experience is similar to the white American experience.

"the children's hour" by henry wadsworth longfellow between the dark and the daylight, when the night is beginning to lower, comes a pause in the day's occupations, that is known as the children's hour. i hear in the chamber above me the patter of little feet, the sound of a door that is opened, and voices soft and sweet. from my study i see in the lamplight, descending the broad hall stair, grave alice, and laughing allegra, and edith with golden hair. a whisper, and then a silence: yet i know by their merry eyes they are plotting and planning together to take me by surprise. a sudden rush from the stairway, a sudden raid from the hall! by three doors left unguarded they enter my castle wall! they climb up into my turret o'er the arms and back of my chair; if i try to escape, they surround me; they seem to be everywhere. they almost devour me with kisses, their arms about me entwine, till i think of the bishop of bingen in his mouse-tower on the rhine! do you think, o blue-eyed banditti, because you have scaled the wall, such an old mustache as i am is not a match for you all! i have you fast in my fortress, and will not let you depart, but put you down into the dungeon in the round-tower of my heart. and there will i keep you forever, yes, forever and a day, till the walls shall crumble to ruin, and moulder in dust away! which literary device does longfellow use most frequently in the poem? a. simile b. metaphor c. repetition d. personification