Aheavy ball suspended by a cable is pulled to the side by a horizontal force f. if angle θ is small, the magnitude of the force f can be less than the weight of the ball because:

a. even though the ball is stationary, it is not really in equilibrium.
b. f is equal to only the x component of the tension in the cable.
c. the force holds up only part of the ball's weight.
d. the original statement is not true. to move the ball, f must be at least equal to the ball's weight.

Iwould say a is accurate

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

B) erini just took the test and it is correct

This question is incomplete and not physics but i'm  willing to if you can give a better question