The correct answer is option (D):
curtailment...... reality
The correct answer is "curtailment...... reality". Here's why:
The sentence structure implies a trade-off. We're giving something up to gain something else.
"Curtailment" means a restriction or reduction. It fits the idea that we must give up some private liberty (personal freedoms) in order to gain a social order.
"Reality" signifies that the social order makes liberty *truly* something we can enjoy. Without a functioning social order, our liberty would be theoretical, perhaps even impossible to exercise safely.
Let's look at why the other options are less suitable:
* "Reduction....fact": While reduction can fit the first blank, "fact" doesn't accurately describe the result of a well-ordered society. Liberty becomes more than just a fact; it becomes a practical aspect of life.
* "Limitation....success": While limiting private liberty could lead to a stable social structure, suggesting the enjoyment of liberty is simply a "success" is less accurate than describing the full and real enjoyment.
* "Cur...symbol": "Cur" doesn't quite fit the context. The second blank also makes less sense. A social order doesn't *make* one's liberty a symbol; it makes it real.
Therefore, "curtailment...... reality" provides the most logical and complete meaning to the sentence, reflecting the relationship between giving up some freedoms for a functioning society where liberty is genuinely enjoyed.