Correct Answer: Criminal

Solution : The correct choice is the first option .

Flagitious is an adjective used to describe something that is extremely wicked, villainous, or criminal.

Criminals convey the idea of something being related to or characteristic of a crime. Thus, it is the correct synonym.

The meanings of the other options are as follows:

• Rare means uncommon or not often found.
• Popular means liked, admired, or accepted by many people.
• Hopeless refers to a lack of hope or optimism, and it does not convey the idea of extreme wickedness or criminal behaviour.