State function:

It is a property of which value does not depend on the path only depends upon the initial and final point 

Like: Internal energy $\left(\mathrm{U}\right)$, Gibb's free energy$\left(\mathrm{G}\right)$

Path function: Does not depend upon the initial and final point like heat energy $\left(\mathrm{q}\right)$ and work done $\left(\mathrm{w}\right)$.

$\left(\mathrm{A}\right) \mathrm{ }\text{q}+\text{w}=\mathrm{\Delta }\text{U}\leftarrow \text{definite\hspace{0.17em}quantity}$
$\left(\mathrm{B}\right) \mathrm{ }\mathrm{q}\to$ Path function
$\left(\mathrm{C}\right)\mathrm{ } \mathrm{w}\to$ Path function
$\left(\mathrm{D}\right)\mathrm{ } \mathrm{H}-\mathrm{T}\mathrm{S}=\mathrm{G}\to$ State function.

$\therefore$ Answer is $\left(1\right)$