which molecular geometry is least likely to occur with sp³ hybridization?\no tetrahedral\no trigonal…

Brief Explanations:

In $sp^3$ hybridization, there are four hybrid orbitals. A tetrahedral geometry occurs when all four hybrid orbitals are bonding pairs. A trigonal - pyramidal geometry occurs when there are three bonding pairs and one lone pair. A bent geometry occurs when there are two bonding pairs and two lone pairs. However, a trigonal planar geometry requires $sp^2$ hybridization (three hybrid orbitals), not $sp^3$ hybridization.

Answer:

B. trigonal planar