Answer
Trigonal bi-pyramidal is the one possible electron domain geometry consistent with the shape in f.
Work Step by Step
There are four bonded atoms, and the mix of 120 and 90 degree bond angles indicate that the molecule in f has a see-saw molecular geometry. For a see-saw molecular geometry, there are always two lone pairs of electrons on the central atom. Thus, there are five electron domains, meaning that the electron domain geometry is trigonal bi-pyramidal.
