Step 1: Understanding the Right to Privacy Case.
- In the landmark case of K S Puttaswamy vs. Union of India (2017), the Supreme Court of India declared the right to privacy as a fundamental right under Article 21 of the Indian Constitution. This case overruled the previous judgments that denied the right to privacy as a fundamental right.
Step 2: Analysis of Options.
- (A) K S Puttaswamy vs. Union of India: Correct. This is the case in which the Supreme Court declared the Right to Privacy to be a fundamental right.
- (B) Joseph Shine vs. Union of India: This case decriminalized adultery but did not involve the right to privacy.
- (C) National Legal Services Authority vs. Union of India: This case dealt with the rights of transgender persons but did not involve privacy.
- (D) Suresh Kumar Kaushal vs. Naz Foundation: This case dealt with the legality of Section 377, which criminalized homosexuality, but did not directly address privacy as a fundamental right.
Step 3: Conclusion.
Thus, the correct answer is (A) K S Puttaswamy vs. Union of India.