<prompt> A pole vaulter had a fall during pole vaulting and had paralysis of the arm . Which of the following investigations gives the best recovery prognosis -ElectromyographyMuscle biopsyStrength Duration CurveCreatime phosphokinase levels  <response>: The electrodiagnostic tests include EMG, nerve conduction study, somatosensory-evoked potential, percutaneous electric stimulation etc. EMG electromyography is by far the most reliable and effective test which successfully identifies the roots, involved. ___Ebnezar 