Which of the following is the correct order of Stevens' four levels of measurement?

Stevens' four levels in correct order are nominal, ordinal, interval, ratio.

Option A wrongly places ordinal before nominal and disorders the rest.

Option C starts with interval, breaking the ascending order of precision.

Option D reverses the sequence, listing ratio first and nominal near the end.

Each level adds a property, moving from bare labels up to a true zero.

S. S. Stevens proposed this hierarchy of measurement in 1946.