Arrange the following waste management practices from most sustainable to least sustainable.

  1. Recycling
  2. Landfilling
  3. Waste-to-energy incineration
  4. Composting

1
4 → 1 → 3 → 2
2
1 → 4 → 2 → 3
3
3 → 2 → 4 → 1
4
2 → 3 → 1 → 4

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