Which of the following activities, if not checked in time, may ultimately lead to the rise in sea level causing the flooding of low-lying coastal areas?

Deforestation leads to increase in the floods as rain water is washed away into rivers. As level of water in rivers and eventually increases it leads to flooding of low-lying areas. In addition, the increased greenhouse effect due to deforestation leads to high temperature and melting of snow. This agains increases the water level in rivers and flooding of low-lying areas coastal areas.