The correct answer is: None is strong.
Argument I is not strong because it does not provide any evidence to support the claim that banning all forms of protests is the only way to teach discipline to employees. It is possible to teach discipline without resorting to such extreme measures.
Argument II is strong because it provides a strong reason why the government should not ban all forms of protests. The right to protest is a fundamental human right, and the government should not deprive its citizens of this right.
Argument III is not strong because it does not provide any evidence to support the claim that banning all forms of protests is the only way to ensure maximum productivity without disruption of work. It is possible to ensure maximum productivity without resorting to such extreme measures.
In conclusion, none of the arguments are strong.