Concept:The energy gap band is the space between the valence band and the conduction band.
It determines how easily electrons can move and conduct electricity.
Explanation:A conductor has a very small or zero energy gap, so electrons move freely.
A semiconductor has a moderate energy gap of about
1 eV, allowing limited conductivity.
An intrinsic semiconductor is a pure semiconductor, so it also has a moderate energy gap.
An insulator has a very large energy gap, usually greater than
3 eV.
This large gap prevents electrons from jumping to the conduction band, so insulators do not conduct electricity easily.
Answer:Insulator.
Thus, the correct option is B.