Final answer:
Volatile anesthetics can affect evoked potentials. Somatosensory evoked potentials (SEP) are usually not affected, but auditory and visual evoked potentials can be affected, especially at higher concentrations of volatile anesthetics.
Step-by-step explanation:
Volatile anesthetics can affect evoked potentials to varying degrees. Somatosensory evoked potentials (SEP) are usually not affected by volatile anesthetics, as they mainly involve the peripheral nervous system and spinal cord. Auditory evoked potentials (AEP) and visual evoked potentials (VEP) can be affected, especially at higher concentrations of volatile anesthetics. Therefore, the correct answer is (b) Auditory evoked potentials (AEP) and (c) Visual evoked potentials (VEP) are affected by volatile anesthetics.