Direct current is the flow of an electric charge

a. that regularly reverses direction

b. that regularly stops and starts again

c. that moves in only one direction

d. that stops at a specific point

Direct current =  that moves in only one direction

Explanation :

Electric current is defined as the electric charge per unit time. The electric current is of two types  

In direct current, the current flows one in one direction while in alternating current the current changes its direction periodically.  So, the correct statement that describes the direct current is " (C) that moves in only one direction ".          

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