Correct answer: D. Transparent and fair process
Explanation: The direct answer is D, a transparent and fair process. Written reasons show why an authority reached a decision, while an appeal gives an affected person a way to ask for review. Together they make the decision understandable, checkable, and less arbitrary. Step by step: the authority makes a decision; it records the facts and legal reasons; the person can read and understand the basis; the person may appeal; a reviewing body can test whether the decision was lawful and fair. Option A, secret rule, is the opposite because written reasons increase openness. Option B, an arbitrary order, is weakened because reasons and review impose checks. Option C, unlimited power, is also weakened because the authority must explain itself. Option D is correct because transparency means reasons are visible and fairness includes review. Memory cue: written reasons plus appeal equals accountability.