d
$3 / 2 P V$
explanation$:$ when a gas has volume $\mathrm{v}$ and pressure $\mathrm{P}$, total translational kinetic energy of all molecules of gas is $3 / 2 P V$.
actually, Translational kinetic energy depends upon translational degree of freedom. and we know, there are only three degree of freedom in translational motion for any gas (monoatomic, diatomic or triatomic etc.)
Hence under same pressure, equal volumes of gaseous molecules have same translational kinetic energy i.e. $(3 / 2) P V$