Concept:
The Tenth Schedule of the Indian Constitution deals with anti-defection law. It prevents elected members from changing parties after election.
• Added by the 52nd Amendment Act, 1985.
• Prevents political defections.
• Maintains stability in government.
Step 1: Understand the anti-defection law.
If a Lok Sabha member leaves his political party:
He may be disqualified
under the Tenth Schedule.
Step 2: Identify who decides.
For Lok Sabha members, the authority is:
Speaker of Lok Sabha
For Rajya Sabha, it is the Chairman.
Step 3: Eliminate incorrect options.
• Speaker of Lok Sabha -- correct
• Prime Minister -- no such power
• Chairperson of Rajya Sabha -- only for Rajya Sabha members
• President -- not applicable here
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Speaker of the Lok Sabha}}
\]