ad·vo·ca·cy 
/ˈædvəkəsi/ noun
/ˈædvəkəsi/ noun [noncount] : the act or process of supporting a cause or proposal : the act or process of advocating something
▪ She is known for her advocacy of birth control. [=she is known for advocating/supporting birth control]
▪ She is known for her advocacy of birth control. [=she is known for advocating/supporting birth control]
