The tactic that was used for securing civil rights as shown in the description above is a litigation. Its primary purpose is to enforce a legal right using legal court proceedings with the aid of the court in determining the resolution of the case. Therefore, the answer would be letter C.
It was a cause of the independent movement of India.
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Divine Right is the right of the sovereign. Pretty much at the time, the monarch(king or queen) believed that they got their power directly from god and not from the people.