A student repeated the Styrofoam ball experiment. This time, the student rubbed the plastic rod on the cat's fur, but also rubbed the Styrofoam ball on the fur. How would the outcome of the investigation change if both objects were rubbed on the cat's fur? Use evidence and scientific reasoning to support your answer. Be sure to describe the charges and field interactions for both objects.

The answer is a.  i hope this

Velocity=total displacement/timefrom house to store is 500 from store to neighbor is 200 therefore total displacement=500+200=700metrestherefore,700metres/910seconds=0.8metres per second

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