Correct Answer: (a) environmental degradation
Solution:Earth Overshoot Day (EOD) is related to environmental degradation. The concept of EOD was first conceived by Andrew Simms of the UK think tank New Economics Foundation, which partnered with Global Footprint Network in 2006 to launch the first Global Earth Overshoot Day campaign. WWF, the world's largest conservation organizaion, has participated in EOD since 2007.