The correct answer is: Only I, III, and IV are strong.
Argument I is a strong argument because it is based on the economic impact of a ban on firecrackers. If firecrackers were banned, thousands of workers would lose their jobs. This would have a negative impact on the economy and on the lives of the workers and their families.
Argument II is a weak argument because it is based on the assumption that firecracker manufacturers use child labor. While this may be true in some cases, it is not true in all cases. There are many firecracker manufacturers who do not use child labor. Therefore, this argument does not provide a strong reason to ban firecrackers.
Argument III is a strong argument because it is based on the environmental impact of firecrackers. Firecrackers create a lot of noise and air pollution. This can be harmful to people’s health and can also damage the environment. Therefore, this argument provides a strong reason to ban firecrackers.
Argument IV is a weak argument because it is based on the personal enjoyment of firecrackers. Some people enjoy using firecrackers on special occasions. However, this does not outweigh the negative impacts of firecrackers on the economy, the environment, and public health. Therefore, this argument does not provide a strong reason to allow firecrackers.
In conclusion, only arguments I, III, and IV are strong.