The correct answer is: C. Only I is strong
Argument I is a strong argument because it is based on a valid reason. A secular state is a state that does not endorse any particular religion. This means that the government should not promote any particular religion in schools. Argument II is a weak argument because it is based on an assumption that is not necessarily true. Just because religion can help inculcate moral values among children does not mean that it is the only way to do so. There are many other ways to teach children moral values, such as through family, community, and culture. Argument III is a weak argument because it is based on an emotional appeal. The speaker is trying to make the reader feel guilty by suggesting that if we do not teach religion in schools, the young generation will not be able to fulfill its role in the 21st century. However, there is no evidence to support this claim. In fact, there are many successful countries in the world that do not teach religion in schools.
In conclusion, only Argument I is a strong argument.