Which of the following situations best demonstrates waking consciousness?

• A. Derrick brings his car to a sudden halt as he notices that the light has already turned red.
• B. Luciana wobbles just a bit as she tries to walk after drinking three glasses of wine.
• C. Orlando carefully calculates his taxes two weeks before taxes are due.
• D. Helena fights to keep her eyes open as she reads a bedtime story to her children.