Over the course of several months, Morris has experienced difficulty speaking coherently, clumsiness, muscle fasciculations, and increasing weakness in his limbs. These symptoms are most consistent with those of

Over the course of several months, Morris has experienced difficulty speaking coherently, clumsiness, muscle fasciculations, and increasing weakness in his limbs. These symptoms are most consistent with those of 


A. Parkinson disease. 

B. Hodgkin's disease. 

C. muscular dystrophy. 

D. cancer. 

E. amyotrophic lateral sclerosis.


Answer: E. amyotrophic lateral sclerosis.


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