The correct answer is: Only argument I is strong.
Argument I is strong because it provides evidence to support the claim that the pen is mightier than the sword. Writers can influence the thinking of the people, and this can lead to social change. For example, the writings of Martin Luther King, Jr. helped to inspire the Civil Rights Movement in the United States.
Argument II is weak because it does not provide evidence to support the claim that the sword is mightier than the pen. The statement that “with the help of physical force one can conquer all” is an overgeneralization. There are many examples of people who have used their words to achieve great things, such as Mahatma Gandhi and Nelson Mandela.
In conclusion, only argument I is strong.