d
The temprature at which a real gas obeys ldeal gas law over an appreciable range of pressure is called Boyle Tempratare. for Ideal gas, $P V=n R T$.
At high temprature much above the critical point of the substance, the real gases can be taken to be have like ideal gases like $O _{2}, N _{2}, H _{2}, He$ etc. At hight temprature $He$ obeys Boyle's law Hence, the answer is option $(D) \; He$.