1) Active support 2) French word used in English 3) Pleading for 4) Support 1) Advice 2) Advocation 3) Approbation 4) Espousal 
the act of seeking third-party support for cause through the act of persuasion. Engagement with an agenda.
Advocacy is a political process by an individual or group which aims to influence public-policy and resource allocation decisions within political, economic, and social systems and institutions. Advocacy can include many activities that a person or organization undertakes including media campaigns, public speaking, commissioning and publishing res...
• (n.) The act of pleading for or supporting; work of advocating; intercession.
The process of influencing government to bring about desired changes; to be in support of something.
Ad'vo·ca·cy noun [ Old French advocatie , Late Latin advocatia . See Advocate .] The act of pleading for or supporting; work of advocating; intercession. 
[n] - active support
advocacy 1. An active verbal support for a cause or position. 2. The act of advocating, or speaking or writing, in support (of something).
Public support for or recommendation of a particular cause or policy.
Speaking or acting on one's own behalf or on behalf of others 
protagonism noun active support of an idea or cause etc.; especially the act of pleading or arguing for something
An advocate helps someone else to express needs & wishes. Advocacy is most effective when carried out by a person who is independent of the services being provided.
the act of pleading for, supporting, or recommending; active espousal: He was known for his advocacy of states' rights.
[SAT terms] active support of an idea or cause