Protective measures that security officers contribute to critical-infrastructure protection include:
Explanation
Security officers contribute to critical-infrastructure protection through multiple complementary measures captured in (d): perimeter maintenance (fences, lighting, gates), access control (verification of credentials), Crime Prevention Through Environmental Design (CPTED) awareness, visible patrols as deterrence, communication readiness (radio, phones, emergency contacts), and prompt reporting of SAR indicators. Security is layered — no single measure works alone, and the security officer is one critical layer. Singular focus options (a, b, c) miss the integrated nature of protection.
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