Which of the following is a symptom associated with motion sickness aside from dizziness?

Nausea is a well-documented symptom of motion sickness, which occurs when there is a conflict between the sensory signals received by the brain. In instances of motion sickness, the inner ear, eyes, and deeper body parts send contradictory messages about movement and position. This discrepancy can lead to feelings of discomfort and the urge to vomit, making nausea one of the most common and distressing symptoms associated with this condition.

In contrast, the other options do not align with the typical symptoms of motion sickness. Enhanced coordination, increased energy, and heightened sense of smell do not represent common responses to motion sickness but rather reflect normal or heightened states of physical function, which are not typically observed in individuals experiencing motion-related distress.