Final answer:
The Destruction of the Temple in 70 AD ended Sadducee and Zealot power and solidified the Pharisees' position in Judaism as the revolt against Rome was quashed and the Temple was razed.
Step-by-step explanation:
The event that ended Sadducee and Zealot power, and established the Pharisees as the dominant school of Judaism was C) The Destruction of the Temple in 70 AD. This catastrophic event occurred as a consequence of the Jewish Revolt against Roman occupation, which began in 66 CE. The Romans responded to this uprising with brutal force, culminating in the destruction of the Second Temple. The fall of the Temple meant that the Sadducees, who were centered around temple worship, lost their base of power. The Zealots, who advocated for armed revolt, were crushed by the Roman military might. In contrast, the Pharisees, who focused on the study and teaching of the Jewish law, survived as a decentralized group and evolved to become the progenitors of Rabbinic Judaism, which shaped the future of Jewish religious practice.