Erosion
Bc of water rushing
The answer to the question above is letter "A. drought". This natural disaster caused trouble to the citizens especially those who are in rural areas and are dependent on ecosystem services and natural resources for their livelihood. They were urged to find alternatives.
Strati volcano is what I think.
Deltas, because volcanoes are a build up of composites, glaciers are from ice melting and leaving behind composites. Deltas are when composites are washed away until there is a whole or trench.
