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

Responses
A guards.guards.
B insurgents.insurgents.
C peasants.peasants.
D senators.

D senators.

The correct answer is D) senators.

To arrive at this answer, we can follow these steps:

1. Start by reading the question carefully to understand what is being asked.
2. Identify the key details mentioned in the question, such as Julius Caesar's role in transforming the Roman Republic into the Roman Empire and his appointment as Rome's dictator for life.
3. Recognize that the question is asking about the group of people who assassinated Julius Caesar.
4. Recall historical knowledge about the events surrounding the assassination of Julius Caesar.
5. Remember that Julius Caesar was assassinated in 44 BCE, on the Ides of March.
6. Recall that a group of senators, led by Brutus and Cassius, plotted and carried out the assassination of Julius Caesar.
7. Choose the answer option that corresponds to the group of people responsible for the assassination, which is D) senators.

Therefore, the correct answer is D) senators.