The correct answer is A) removed the Senate.
When the Roman Empire began in 27 B.C., the emperor removed the Senate.
We are talking about Octavian, the Emperor, who ruled Rome for 40 years.
After so many years, Octavian surrendered all of his power to the Senate but it awarded him even more power.
Octavian Augustus had already planned. After so many years of Emperor exerting total power and control over Rome, in 27 BCE, Octavian decided to surrender his power to the Senate, quitting his consulship. He was beginning his seventh term as consul of Rome. Almost the entire Senate were followers and decided supporters of Octavious, so the Senate did not accept his decision and gave him even more power, arguing that Rome needed to maintain unity.