The correct option is A Deforestation
Deforestation refers to cutting down trees permanently to clear forests to make land available for other uses.
Reforestation refers to the process of replanting trees over areas where trees have been damaged or destroyed.
Afforestation refers to the planting of trees in an area that is not previously forested, that is, where there was no previous tree cover.
Overgrazing refers to intensive grazing of plants by the cattle for extended periods of time, or without sufficient recovery periods.
The given image shows the cutting down of trees in the forest. Therefore, it depicts deforestation.