If Marie pushes horizontally on a table, but not hard enough to get it moving, the friction force acting on the table is A) zero.
B) equal to the weight of the table.
C) equal and opposite to her push.
D) none of the above

Ithink the answer would be a

A., d., and f i think

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