The one-horned ‘unicorn’ motif is the most frequent animal image on Harappan seals. Clear and undisputed horse imagery is not characteristic of Harappan seals. The one-horned animal (unicorn) fits that evidence because it matches the specific chronology, agency and function contained in the question. A comparison with the alternatives is useful: The horse, The tiger and The elephant are genuine historical terms or names, but each belongs to a different office, patron, text, region or sequence. The common error is to select the most familiar option without checking whether it performs the role described in the stem. The compact memory link is therefore The one-horned animal (unicorn) together with the factual context above, not the isolated option letter.