Why is studying data necessary before taking a policy decision?

Correct answer: So that the decision is based on the real situation and evidence.

Correct answer: A. Data consists of organised information, such as reliable figures, surveys or records, that helps decision-makers understand the size and nature of a public problem. Before adopting a policy, data can show who is affected, where the problem is serious, what resources may be needed and whether a proposed solution is likely to work. Data alone does not decide every value question, so it should be considered along with rights, fairness and public discussion. A is correct because evidence makes a decision more informed and testable. B is wrong because data cannot remove Parliament’s constitutional role in making laws. C is wrong because courts do not cast votes as part of data study. D is wrong because responsible evidence-based policy should support, not prevent, public understanding. Memory cue: first understand the problem with evidence, then choose and review the policy.