Does the colour of an object affect the rate of evaporation?

Every colour has different absorption coefficient and capacity to absorb sunlight energy. So in the process of evaporation if the container is black then more molecules will get the energy and will be excited to atmosphere hence increasing evaporation.

Yes because colored objects absorb heat and deflect the rest back to the sun unlike the the color white which reflects the rays of the sun completely thus making it appear white

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