A. We used to live at 8725 Palomar Rd Princeton, NJ 08543.
B. We used to live at 8725 Palomar Rd, Princeton NJ 08543.
C.We used to live at 8725 Palomar Rd., Princeton, NJ 08543.
The answer to this item is the third choice. After the abbreviation of road, Rd., there is a need for a period. The road, town, and the state are also separated by the commas. This allows the reader to better understand the given address.
