What was the main street running through the Forum Romanum?

The main street running through the Forum Romanum is the Via Sacra. This ancient road served as a key route for religious and celebratory processions in Rome, connecting various important temples and buildings within the Forum. The Via Sacra, which translates to "Sacred Way," was significant for its association with numerous religious ceremonies, including the triumphal processions of victorious generals returning to Rome.

The other choices represent different roads within or associated with Rome, but they do not specifically denote the main avenue through the Forum. The Via Lata was an important thoroughfare but was located outside the Forum area. The Via Nova was a lesser-known street that did not hold the same prominence as the Via Sacra. The Via Appia, known as one of the earliest and most important Roman roads, connected Rome to the South of Italy but did not pass through the Forum itself. Therefore, the Via Sacra is correctly identified as the principal street through the Forum Romanum, highlighting its role in linking the political and religious life of ancient Rome.