Which Example Best Reflects the Use of Interrater Reliability

Which example best reflects the use of interrater reliability?

A) In a study examining the favorite foods of college students,a large sample of students rate several foods according to their preferences.The degree to which students' responses are correlated is assessed.
B) In a study examining well-being in the elderly,respondents living in different nursing homes are asked to rate the quality of their nursing home.Researchers then obtain a copy of participants' medical records.The relationship between the quality ratings and actual health is assessed.
C) In a study examining the creativity of children's paintings,several judges are asked to rate the creativity of each painting.The degree to which the judges agree in their ratings is assessed.
D) In a study examining toy preferences of toddlers,the children are left alone to play with several toys for an hour.During the first half-hour,one researcher observes their play.During the second half-hour,a second researcher observes their play.The researchers' observations are then compared.