The line graph below shows the number of downloads of two songs after they are released. The downloads are shown in units of hundreds.
70

Number of downloads
(hundreds)
30
10
10 11 12 13 14 15
Time minutes)
a
About how many downloads did song 2 have at minute 8?

The answer would be a

The relationship of both of them

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