To increase the current in a circuit, the can be increased.

The correct answer is voltage.

According to ohm's law,

V = IR, where V is the potential difference between two points(voltage), I is the electricity, R is resistance.

If the resistance in the electrical conductor is kept constant then the current in the circuit can be increased by increasing the voltage.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

c, liquids evaporate, creating a gas