Problem:
Some variables in the Add Health data set are recorded by the interviewer, without the participants' knowledge. One question from Wave I instructs the interviewer to "code the race of the respondent from your own observation alone." The interviewer's answer to this question could include only one race/ethnicity per participant, with five options: "White", "Black", "American Indian/Native American", "Asian or Pacific Islander", or "Other". What kind of variable is the interviewer's answer?