Why should you avoid tobacco, alcohol and drugs?

• A. They are expensive
• B. Because they impair mental function
• C. They enhance physical health
• D. They improve mood temporarily

Answer: (B)

The main idea here is that these substances cloud thinking and slow the brain, which directly undermines performance in tasks that require focus, memory, judgment, and coordination. Because good mental function is essential for making safe, reliable decisions and for performing at work or school, avoiding tobacco, alcohol, and drugs helps protect your safety and professionalism. Some people think these substances are worth using for a quick mood lift or social reasons, but that effect is temporary and can be followed by longer-lasting problems, so the overall impact on mood and well-being is negative. They also do not improve physical health; in fact, long-term use commonly harms organs and overall fitness. While cost can be a real consequence, the more important point for daily functioning is the impairment to mental and physical health, which is why avoiding them is advised.