# Inductive effects involve:A. Displacement of $\sigma$ electrons resulting in polarizationB. Displacement of $\pi$ electrons resulting in polarizationC. Delocalization of $\sigma$ electronsD. Delocalization of $\pi$ electrons

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Hint: Electron displacement is fundamentally the displacement of electron clouds from one atom to another atom in a molecule.
Delocalization of electrons is nothing but the electrons are shared between certain atoms, where a molecule cannot be represented by a single structure.
Inductive effect involves electron displacement due to difference in the electronegativity of the atoms of a compound.

In an inductive effect the sigma ($\sigma$) electrons are going to displace resulting in the polarization of the bond.
Inductive effect is nothing but the polarization of a $\sigma$ bond due to presence of an electron withdrawing or an electron donating groups or atoms in a molecule.
$\overset{\delta \delta \delta \delta +}{\mathop{C{{H}_{3}}-}}\,\overset{\delta \delta \delta +}{\mathop{C{{H}_{2}}-}}\,\overset{\delta \delta +}{\mathop{C{{H}_{2}}-}}\,\overset{\delta +}{\mathop{C{{H}_{2}}-}}\,\overset{\delta -}{\mathop{Cl}}\,$
In the above example the chlorine is a highly electronegative element and displaces the $\sigma$ electrons towards it from the carbons atoms in a chain resulting in polarization.