Hybridisation

Step 1: {Hybridisation of the Central Atom}
In sp d hybridisation, the central atom undergoes hybridisation by combining one , three , and two orbitals, resulting in six hybrid orbitals. This hybridisation occurs in species where the central atom is bonded to six other atoms.
Step 2: {Analysis of Compounds}
In BrF , bromine undergoes sp d hybridisation, as it is bonded to five fluorine atoms.
In SF , sulfur undergoes sp d hybridisation, as it is bonded to six fluorine atoms.
In [CrF ] , chromium undergoes sp d hybridisation due to the bonding with six fluoride ions.
In PF , phosphorus undergoes sp hybridisation, as it is bonded to five fluorine atoms, not six.
Thus, the correct answer is (D).