Politicians toady are robbing the nation of its wealth.

Answer: Option D

Robbing : take property unlawfully from (a person or place) by force or threat of force.
Strengthening : make or become stronger.
Protecting : keep safe from harm or injury.
Helping : a portion of food served to one person at one time.
Enriching : improve or enhance the quality or value of.

Antonym of Robbing is Enriching