They have to destroy the colonized people's culture, including their literature and language.
<u><em>Explanation:</em></u>
Ngugi wa Thiong'o says the genuine point of imperialism was to control individuals' riches; what they delivered, how they created it, how it was dispersed, the control through culture, how individuals thought of themselves, and their relationship to the world.
"Supportive" is the one word among the following choices given in the question that best describes Edgar Degas in "Mary Cassatt: Artist and Trailblazer". The correct option among all the options that are given in the question is the third option or option "C".