you probably have to do it with your email
the correct answer is - d. choka.
the japanese literature is a rich one, it has multiple different forms, defined by length, structure, theme. one of the forms of japanese literature is the choka, which is a version of waka.
the choka consists of alternating lines of five and seven syllables, ending with an extra line of seven syllables. this is a long form of japanese poetry, and there's no rule as to how long should a choka be, its length can be infinite. no wonder that very often a choka can be long as much as 100 or 150 lines, occasionally even more.
i think it's in-text citations. i'm stuck between that and a bibliography page. but if you are doing an essay or something, you could say according to blahblahblah. so i think it's in-text citations
as the little girl riley is moving from minnesota to a new house in san francisco, sadness (one of the emotions in her head) touches a joyous memory and somehow turns it sad. joy—the chief emotion—panics and convinces sadness to move back where she can’t have any effect on riley. this does a great job of introducing the conflict on a number of levels: riley’s discomfort with the changes in her life is the main conflict in the “outer” story; joy’s conflict with sadness is the main interpersonal conflict; and sadness’s ability to affect established memory’s becomes a catalyst throughout the plot.