1 point How has China posed a challenge to the world's environmental welfare? *
Its fast economic growth has led to increased air and water pollution.
It is the world's largest emitter of greenhouse gases.
All of the above

All of the above

Explanation:

China poses a challenge to the world's environmental welfare as its fast economic growth has led to increased air and water pollution. The country's rapid industrialization has contributed to pollution which affects the environmental balance.

Also, the country is the world's largest emitter of greenhouse gases. China is known to be the largest emitter of carbon dioxide gas with brings about the disruption of the temperature in the atmosphere and then leads contributes to global warming.

Therefore, the correct option is All of the above.

using the scientific method.

good question. i'll be looking into that. (this is a joke sir)