The correct answer would be, Communicating.
Communication is required in Advocacy.
Explanation:
Advocacy is the skill you are using when you try to influence the decisions that others make about any of their issues.
If someone talks about his or her decision about any issue, and you think that their decision is not good for them, you try to influence their decision by making them understand the true consequences of their decision. You try to support them, or try to give them recommendations. This skill of providing recommendations about a certain thing or issue to someone is called as advocacy.
Advocacy is only achieved through communicating the recommendations. Unless and until, the problem or the issue is not communicated, advocacy cannot be achieved.
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