Motion sickness can be explained by

• A. a type of allergic reaction.
• B. conflict between visual input and other sensory input.
• C. environmental discord.
• D. an imbalance in the kinesthetic senses.

Answer: (B)

Verified step by step guidance

1. Understand the concept of motion sickness: Motion sickness occurs when there is a disconnect between the sensory inputs received by the brain, particularly between what the eyes see and what the inner ear senses.
2. Identify the key sensory systems involved: The visual system (eyes) and the vestibular system (inner ear) are primarily responsible for detecting motion and balance.
3. Recognize the conflict: Motion sickness often arises when there is a conflict between visual input (what you see) and vestibular input (what your inner ear senses). For example, reading a book in a moving car can cause motion sickness because your eyes are focused on a stationary object while your inner ear senses movement.
4. Consider the options: Evaluate each option provided in the problem. The correct explanation for motion sickness is the 'conflict between visual input and other sensory input,' as this aligns with the sensory mismatch theory.
5. Eliminate incorrect options: Discard options that do not align with the sensory conflict theory, such as 'a type of allergic reaction,' 'environmental discord,' and 'an imbalance in the kinesthetic senses,' as these do not accurately describe the cause of motion sickness.