Explanation :
According to Ohm's law :
V =IR
Where
I is the current flowing
R is the resistance of the wire
V is the potential difference

If V is constant :
k = IR

if I increase, then R decrease. So, option (2) is correct.
If R is constant :
There is an inverse relation between the voltage and the current.
So, If the resistance decreases, then the current increases. Assume voltage is constant.
If the voltage increases, then the current decreases. Assume resistance is constant.