Indigo i think................
The correct answer is "the invasion of Rome by the Visigoths in 476 CE.
While the other two answers are part of the decline in the Roman Empire, the greatest contributing factor was the series of invasions from the Visigoths, also known as the Goth Wars. This caused the Western Roman Empire to officially end when Odoacer deposed of Emperor Romulus Augustulus and declared himself king of Italy.
B) spending time with friends
