Though julius caesar played a major role in transforming the roman republic into the roman empire and the roman people had proclaimed him rome's dictator for life, he was assassinated by a group of a) guards. b) insurgents. eliminate c) peasants. d) senators.

D)senators.

Explanation:

Although under his government the Republic experienced a brief period of great prosperity, some senators saw César as a tyrant who sought to restore the monarchy. In order to eliminate the threat posed by the dictator, a group of senators formed by some of his trusted men such as Brutus and Cassius and former lieutenants such as Trebonio and Tenth Brutus plotted a conspiracy in order to eliminate it. This plot culminated when, in the IDs of March, the conspirators murdered César in the Senate.

d is the best answer for this question.