Concept:Mining causes environmental damage, but reafforestation is a positive measure, not a negative effect.
Explanation:Negative effects of mining include land degradation, destruction of farmlands, and pollution of water bodies.
These directly harm the environment and local communities.
Reafforestation means planting trees in rural communities.
This is a conservation or restoration activity, not a harmful effect of mining.
Therefore, reafforestation does not belong to the list of negative effects.
Answer:A. Reafforestation in rural communities