Step 1: Analyzing statement (A):
The Pollution Haven hypothesis suggests that trade liberalisation can lead to the relocation of production to countries with weaker environmental regulations. This is a valid statement. Hence, statement (A) is correct.
Step 2: Analyzing statement (B):
The Porter hypothesis asserts that stricter environmental regulations can actually spur innovation and make firms more efficient. It does not suggest that strict regulations prevent technological advancement. Hence, statement (B) is incorrect.
Step 3: Analyzing statement (C):
The Race to the Bottom hypothesis suggests that countries might lower environmental standards to attract foreign investment, not raise them. Hence, statement (C) is incorrect.
Step 4: Analyzing statement (D):
The Environmental Kuznets curve hypothesis posits an inverted U-shaped relationship between economic growth (measured by per capita income) and environmental quality, where environmental degradation initially increases with income but decreases after a certain level of income is reached. Hence, statement (D) is correct.