The correct answer is: Only conclusion II follows.
The statement says that economic equality is a necessary condition for political freedom and democracy. However, it does not say that political freedom and democracy are sufficient conditions for economic equality. In other words, the statement does not say that if a country has political freedom and democracy, then it will also have economic equality.
Conclusion I is a logical consequence of the statement. If economic equality is a necessary condition for political freedom and democracy, then political freedom and democracy cannot exist without economic equality. However, conclusion II is not a logical consequence of the statement. The statement does not say that economic equality is the only way to achieve political freedom and democracy. There may be other ways to achieve political freedom and democracy, even if economic equality does not exist.
Therefore, the correct answer is: Only conclusion II follows.