Calculate the amount of heat energy required to raise the temperature of 50 g of lead of specific heat capacity 0.13 I g ' °C i from 27 °C to 327 °C.

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

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

The genes are more on the side of.. b nature