# The kind of delocalization involving sigma bond orbitals is called,

(a)Inductive effect

(b)Hyperconjugation effect

(c) Electromertic effect

(d) Mesomeric effect

Hyperconjugation involves clelocalization of $\sigma$ electrons through overlapping of p- orbitals of a double bond and $\sigma$ orbitals of the $\alpha -C =H$ bond or the alkyl group.
So Hyperconjugation effect is correct
Hence b is the correct answer.