Which one of the following pairs is wrongly classified?
| Positive effect on the environment | Negative effect on the environment | |
| A | Incinerating rubbish in residential areas | Covering opened dust bins left out in the open |
| B | Breeding animals like chicken and sheep for food | Cutting down trees |
| C | Collecting rainwater for watering garden plants | Feeding animals in the wild |
| D | Using recycled material | Leaving unfinished food at the canteen table |