In 2011, Japan faced a major environmental crisis when
1)an oil tanker rammed a reef, spilling 10.8 million gallons of oil into environmentally important and fragile waterways
2)an earthquake and the tsunami it created overwhelmed a nuclear power plant leading to three nuclear meltdowns and the release of nuclear contaminants
3)the Deepwater Horizon oil rig exploded, spilling oil into the water for 6 months before being sealed
4)a hurricane overwhelmed a city's pumping system, leading to widespread flooding at the same time that a city dam collapsed