Which of the following can affect your driving ability?

• A. Alcohol, cough syrups and cold tablets, marijuana
• B. Only alcohol
• C. Weather and fatigue
• D. Only marijuana

Answer: (A)

Substances and medications can clearly impair driving by slowing reaction times, dulling judgment, or interfering with coordination. The option listing alcohol, cough syrups and cold tablets, and marijuana is the best choice because each item is a well-known driver-imparing factor. Alcohol lowers coordination and decision-making; marijuana distorts perception and motor control; many over-the-counter cough syrups and cold tablets contain ingredients like antihistamines or decongestants that can cause drowsiness, dizziness, or blurred vision, and their effects can be worsened when combined with alcohol. Taken together, these factors cover a broad range of real-world impairments you might encounter, making this option the most comprehensive. Other choices are narrower or describe conditions that can affect driving but don’t capture the full scope of common impairing substances. If you’re ever unsure after taking meds or using alcohol, don’t drive.