Enthalpy of a gas depends upon its

Answer: Option A

Because the enthalpy of an real gas is given by
$$dH=C_{p}dT+\left[V-T\left(\frac{\partial V}{\partial T}\right)p\right]dp$$
For ideal gas since $$\left(\frac{\partial V}{\partial T}\right)p=\frac{R}{P}\Rightarrow dH=c_{p}dT$$
Hence only for an ideal gas enthalpy is a function of temperature.