विधानसभा सदस्य हा सभागृहाचा सदस्य राहण्यास अपात्र ठरू शकत नाही, जर तो सदस्य____

The correct answer is Option B (is expelled by the political party from which he had been elected to the House.).

Key Points:
• Disqualification on grounds of defection is regulated by the Tenth Schedule (added by the 52ⁿᵈ Constitutional Amendment Act, 1985):
• A member becomes disqualified if he voluntarily gives up party membership (Option 1).
• A member becomes disqualified if he votes or abstains from voting contrary to party whip without prior permission (Option 3).
• An independently elected member becomes disqualified if he joins any political party after election (Option 4).
• However, if a member is EXPELLED by his political party, he does NOT lose his seat in the legislature under the Tenth Schedule; he continues as an unattached/independent member.
• Hence, under Option 2, the member does not become disqualified.
• Key Takeaway: Under the Tenth Schedule, an expelled legislator does not lose seat membership in the legislature.