Answer:
frequent blinking, or heavy eyelids. Daydreaming; wandering/disconnected thoughts. Trouble remembering the last few miles driven; missing exits or traffic signs
Explanation:
Alcohol or Tiredness
B. tolerance, dependence, addiction
The item from this list which isn't considered a stimulant would be alcohol - a. It is considered to be a depressant. All the other items - nicotine, caffeine, and cocaine have stimulating effects which are known to their useres, while alcohol doesn't have an stimulating effect generally.