Which statement correctly describes microscopes? Check all that apply.

Microscopes make small things appear larger.
Magnification makes something look smaller.
Hans and Zacharias Janssen created the first microscope.
A lens is a transparent material that helps show the details of things observed.
The first microscope was made of two tubes with lenses at the ends.

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