Explanation

Option A is correct as it lists the three core tasks mentioned in the post-2023 NATO communique. Option B uses incorrect terms like 'Perseverance' and 'cooperative business'. Option C incorrectly states 'Deterrence and security' instead of 'Deterrence and defence', and has an incorrect third element. Option D uses inaccurate phrasing with 'Deterrence and pressure' and 'cooperative mechanisms'.