Final answer:
The correct Lewis structure for OPBr₃ is option D, which shows phosphorus as the central atom, double-bonded to oxygen and single-bonded to three bromine atoms.
Step-by-step explanation:
The question pertains to drawing the Lewis structure for a molecule with the formula OPBr₃, where phosphorus (P) is the central atom. In this structure, phosphorus will have five valence electrons, and each bromine (Br) atom will have seven valence electrons. Additionally, oxygen (O) has six valence electrons. When creating the Lewis structure, we account for each atom's need to reach an octet (except for hydrogen, which aims for two electrons). Here, the structure will be most stable with P as the central atom, forming a single bond with each of the three bromine atoms and a double bond with oxygen, thereby allowing all the atoms to achieve a full valence shell.
The correct answer is thus option D, O = P - Br₃, with phosphorus double-bonded to oxygen and single-bonded to three bromine atoms.