The WHO 'Best Buys' for Non-Communicable Disease (NCD) prevention include all of the following EXCEPT:

• A Tobacco taxation and smoke-free legislation
• B Salt reduction policies and trans-fat elimination
• C Replacing trans-fatty acids with unsaturated fats in food supply
• D Universal cancer screening with CT scan for all adults above 40 years ✓

Explanation

WHO 'Best Buys' for NCDs are cost-effective, evidence-based interventions: tobacco taxation, bans on advertising, smoke-free places, salt reduction, trans-fat elimination, harmful alcohol use reduction, and access to essential NCD medicines. Population-based CT screening for cancer is not a WHO 'Best Buy' due to cost, radiation exposure, and limited applicability at population level.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

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