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Question

Please read the following paragraph and then answer the following questions.
Amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, is a fatal disorder characterized by muscle weakness. Stumbling when walking or difficulty with using a hand is a typical early symptom. Individuals with ALS lose the ability to consciously control movement, though cognitive and sensory functions generally remain unimpaired. There is currently no cure for ALS.
In ALS, sensory input and integration are unaffected, and muscle cells still respond to neurotransmitters when they are present. Which structure would you recommend scientists to study to find a cure for ALS?
A) sensory neurons
B) interneurons
C) motor neurons
D) mechanoreceptors

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