Step 1: Understanding the Question.
The Anti-Defection Law, which deals with the disqualification of elected members from the Legislature if they defect from their party, was added to the Constitution of India under the 52nd Amendment in 1985.
Step 2: Analysis of Options.
- (A) 51st Constitutional Amendment: This is incorrect, as it does not pertain to the Anti-Defection Law.
- (B) 52nd Constitutional Amendment: This is the correct answer as the Anti-Defection Law was introduced under this amendment.
- (C) 53rd Constitutional Amendment: This is incorrect, as the law was not introduced in this amendment.
- (D) 54th Constitutional Amendment: This is incorrect as the Anti-Defection Law was introduced under the 52nd Amendment.
Step 3: Conclusion.
Thus, the correct answer is (B) 52nd Constitutional Amendment.