Identify the variables that pertain to interval scale of measurement:

Date of birth and time of the day belong to the interval scale, since both have equal intervals but arbitrary zeros.

Gender is a nominal variable made of unordered categories, so statement one fails.

Religion is likewise nominal, carrying labels without rank, so it cannot be interval.

Options including gender or religion therefore misclassify nominal data as interval.

Calendar dates and clock time lack a true zero, which is why they are interval rather than ratio.

On an interval scale differences are meaningful but ratios are not.