Correct Answer: Tyrant

Solution : The third option is the correct choice.

In the context of a cruel and oppressive ruler , the term that specifically denotes such a leader is a tyrant. A tyrant is characterised by the misuse of power, cruelty, and oppression in governing.

The meanings of other options are as follows:

• Traitor refers to someone who betrays or is disloyal to their own group, country, or principles.
• An aristocrat is a member of the aristocracy, often associated with the highest social class.
• A Democrat refers to someone who believes in or advocates for a system of government by the people.