Answer:
Nominal
Explanation:
In statistics or research methods, a nominal scale is considered as the very first level of "measurement scale" wherein various numbers serve only as labels or tags in order to classify or identify a particular object. However, the nominal scale of measurement generally deals with only "non-numeric" i.e, quantitative variables or the place where different numbers don't have any value.
Example: Sex, religious affiliation, city, place, etc.
According to the question, the appropriate scale of measurement is the nominal scale.