✓ Correct answer: A. Ability to focus and sustain attentionDrug misuse directly impairs an employee's ability to concentrate, increasing the probability of mistakes and accidents occurring in the workplace.
Why the other options are incorrect:
• Muscular strength and physical endurance: Physical strength may be affected by drug misuse, but concentration is the cognitive function most directly undermined.
• Annual leave entitlement: Annual leave entitlement is an employment right and is entirely unrelated to the cognitive effects of drug misuse.
• Adherence to workplace dress code: Dress code compliance relates to workplace appearance standards and is not a measure of cognitive performance.
• Accuracy of payroll and wage calculations: Payroll accuracy is an administrative and financial matter, not a function affected by drug misuse.
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Theory