Explanation:

- Article 17: It abolishes "untouchability" and forbids its practice in any form.

- The Civil Rights (Protection) Act, 1976 draws its powers from this article.

- Correct Answer: Option 1 - Article 17

- Article 19: It guarantees six freedoms, including speech and expression.

- This is not directly related to the Civil Rights Act.

- Article 14: It guarantees equality before the law and equal protection of the laws.

- It forms the basis of anti-discrimination but not directly linked to the Act.

- Article 15: Prohibits discrimination on grounds of religion, race, caste, sex, or place of birth.

- While relevant to civil rights, it's not the direct source of power for this Act.