The correct option is
C T-shaped
In
BrF3 molecule out of 7 valencies of bromine 3 are satisfied by fluorine. So there are 2 lone pairs of electron present around the bromine along with 3 bond pairs. So,
BrF3 shows
sp3d hybridization.
Hence, it should show trigonal bipyramidal geometry but it shows T-shape because of 2 lone pairs of electrons.
Option C is correct.