Which hybridization schemes allows the central atom to form more than four bonds?

The options in this question are sp3, sp3d and sp2

sp3d

Explanation:

The hybridization scheme in a molecule determines the number of bonds the central atom can form with other atoms.

sp3 hybridization leads to the formation of four bonds by the central atom

sp2 hybridization leads to the formation of three bonds by the central atom

sp3d hybridization leads to the formation of five bonds by the central atom. Hence the answer.

it's a b and