Alcohol impairs reaction time

Steps:

• Reaction time is measured by ruler drop distance converted to time.
• Alcohol depresses central nervous system, slowing neural signals and muscle response.
• Post-alcohol trials show longer times due to impaired coordination.
• Correct graph illustrates time increase after alcohol consumption.

Why A is correct:

• Depicts rising reaction time after alcohol, aligning with alcohol's effect on slowing reflexes per neurophysiology.

Why the others are wrong:

• B: Shows decreasing time, contradicting alcohol's impairment.
• C: Indicates no change, ignoring alcohol's known depressive impact.
• D: Suggests erratic or unrelated pattern, not matching expected linear slowdown.

Final answer: A