How does mass relate to Potential Energy? *
A. The more massive the object, the less pe it has
B. The more massive the object, the more pe it has
C. mass and pe are not related

B, if it was a lower watt she could put it in for her normal time and not burn it

True.it is better to buy a washer with a higher efficiency rating

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