Step 1: Constitutional safeguard.
Article 17 of the Indian Constitution expressly abolishes untouchability and forbids its practice in any form. It declares untouchability as an offense punishable by law.
Step 2: Analyzing the options.
- (A) Article 23: Prohibits human trafficking and forced labor, not untouchability.
- (B) Article 24: Prohibits child labor in hazardous employment.
- (C) Article 17: Correct — abolishes untouchability.
- (D) Article 15: Prohibits discrimination on grounds of religion, race, caste, sex, or place of birth, but not specific to untouchability.
Step 3: Conclusion.
The abolition of untouchability is specifically provided in Article 17.