To determine which circuit will have the greatest electric current, we would need additional information about the circuits, such as resistance values and voltage sources.
According to Ohm's Law, the current (I) through a circuit can be calculated using the formula:
\[ I = \frac{V}{R} \]
where \( I \) is the current, \( V \) is the voltage, and \( R \) is the resistance.
If you provide specific details about the voltage and resistance of each circuit, I can help you identify which one has the greatest electric current.