Final answer:
Cold pills, tranquilizers, and some prescription drugs may affect driving skills due to their psychoactive properties, which can cause drowsiness, impaired coordination, and sedation.
Step-by-step explanation:
The drugs that may affect driving skills are cold pills, tranquilizers, and some prescription drugs. These substances are considered to be psychoactive drugs because they alter brain function and can lead to changes in perception, mood, consciousness, cognition, or behavior, thereby affecting driving ability. For example, cold pills often contain antihistamines that can cause drowsiness or impaired coordination. Tranquilizers, such as benzodiazepines, can reduce anxiety but also lead to sedation and decreased alertness. Certain prescription drugs, especially opioids and some antidepressants, can have sedating effects or impair cognitive functions, making it dangerous to operate a vehicle. It is crucial for individuals to be aware of the potential effects of these drugs on their driving skills.