all the following are an example of electrical current except:
a) charges flowing in one direction through a circuit.
b) charges moving through a conductor.
c) electrical discharge from a charged object.
d) electrons moving through a copper wire

Question

all the following are an example of electrical current except: 
a) charges flowing in one direction through a circuit.
b) charges moving through a conductor.
c) electrical discharge from a charged object.
d) electrons moving through a copper wire

radar · Answer

I guess they want answer c, however I'm not sure.  A discharge such as an arc is still a movement of charge through ionized air or plasma.