Find the synonym of the underlined word: 

He worked hard for the enlightenment of his people. 

The term 'enlightenment' refers to the act of enlightening or educating, as well as the state of being enlightened.
"Robbie looked to me for enlightenment" In this line, he worked hard for his people's enlightenment; 'enlightenment' refers to education or induction. As a result, option D is correct and the others are not because they do not supply sufficient information.

Lavishness denotes the trait or reality of being unrestrained or reckless with money. The opulence of the prize winner's new lifestyle astounded his pals. Abuse refers to the wrong use or handling of something, frequently in order to unfairly or improperly benefit from it. Abuse can take many different forms, including physical or verbal harm, injury, assault, violation, rape, unfair treatment, criminal activity, and other forms of violence.