Detailed Solution:
The correct answer is “Article 14”.
Article 14 of the Indian Constitution guarantees the right to equality before the law and the equal protection of laws to all persons within the territory of India. This article imposes an absolute limitation on the legislative power, meaning the state cannot make laws that discriminate against any individual or group.
Article 15 prohibits discrimination on grounds of religion, race, caste, sex or place of birth.
Article 16 guarantees equality of opportunity in matters of employment or appointment to any office under the State.
Article 17 abolishes untouchability.
While these articles also deal with equality, they do not impose an absolute limitation on legislative power in the same way as Article 14.