!FIRST ONE TO ANSWER GETS MARKED AS BRAINLIEST!
The intensity of sound waves produced by mosquito and cannon are 10^2 W/m^2 and 10^6 W/m^2. What is the relative intensity?

A. 180 dB
B. 200 dB
C. 60 dB
D. 20 dB
E. 40 dB

From negative to negative

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