A.I. Explanation:

Option 1: "To some extent, the greening of the developed world has been at the expense of the environment in emerging economies."

Explanation: The text discusses how developed economies, despite their high consumption and waste production, have relatively low pollution levels due to stringent regulations and the greening of industry. However, it also implies that this greening may lead to negative environmental impacts being shifted to emerging economies, thus supporting the idea that the greening of the developed world comes at a cost to the environment elsewhere.

Option 2: "The rapid industrialisation of developed economies offsets the environmental gains in the emerging economies."

Explanation: This option incorrectly suggests that industrialisation in developed economies negates environmental improvements in emerging economies. The text does not mention rapid industrialisation as a factor affecting environmental gains; instead, it highlights the relocation of polluting activities to emerging economies.

Option 3: "Businesses in emerging economies are often oblivious to their negative impact on the environment."

Explanation: This option implies a lack of awareness among businesses in emerging economies regarding their environmental impact. However, the text does not address the awareness or attitudes of these businesses, making this statement unsupported by the provided information.

Option 4: "Developed world remains by far the biggest culprit for the spread of pollution."

Explanation: While the text acknowledges that developed economies have large ecological footprints, it also states that pollution levels are relatively low in these regions. This contradicts the assertion that they are the biggest culprits for pollution, as the text emphasizes the relocation of polluting activities to emerging economies.