Option 1 states that a Member of Lok Sabha does not become disqualified if they voluntarily give up their membership of the political party from which they were elected. This means that if a member chooses to leave their party on their own accord, they will not lose their position in the House.

Option 2 states that a Member of Lok Sabha does not become disqualified if they are expelled by the political party from which they were elected. This means that even if a member is expelled from their party, they will still retain their position in the House.

Option 3 states that a Member of Lok Sabha does not become disqualified if they join a political party after being elected as an independent candidate. This means that if a member initially runs as an independent but later joins a political party, they will not lose their position in the House.

Option 4 states that a Member of Lok Sabha does not become disqualified if they abstain from voting contrary to the direction by their political party. This means that if a member does not vote in line with their party`s direction, they will not lose their position in the House.

The correct answer is option 2, as it correctly identifies that a member is not disqualified even if they are expelled by their political party.