If a hurricane wing is moving at 100km/hr and a plane is flying with the wind at a speed of 150km/hr relative to the wind, how long does take the plane to fly the 145 km from Cuba to Florida? Thank you in advance! :)

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current