Answer: B — Only I, III and IV are correct.
Belgium formed a community government (I), gave equal representation to language groups in central and Brussels governments (III), and gave additional constitutional powers to regional/local governments (IV). Majoritarian policy (II) was followed by Sri Lanka, not Belgium.
Source: Accommodation in Belgium, Chapter 1
The key is to eliminate Statement II. Belgium's entire approach was to avoid majoritarianism — that was Sri Lanka's mistake. The Belgian model rests on power-sharing, equal representation, community governments, and decentralisation. Examiners expect students to recall that "majoritarian policy" is the negative example (Sri Lanka), not Belgium's solution.