Why is Tungsten metal selected for making filaments of incandescent lamp bulbs?

Electric heat is used to produce light in incandescent lamps. The filament inside the bulb should withstand high temperatures to keep it extremely hot so that it emits light and does not melt at high temperatures.

-In this case, strong metal with a high melting point is used to keep the filament safe from heat and remain isolated as much as possible. Pure Tungsten is one such material used to make bulb filament as it has a very high melting point of 3695K. Also, its vapor pressure is very low and has a high degree of durability in all metals used for heat and electricity.

Thus, the correct option is C.