the removal of underground resources a collision between two tectonic plates dense rock formations under the topsoil buildup of sediment on the ocean floor
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following is a likely reason for a sinkhole to form?
Possibilities:
- the removal of underground resources
- a collision between two tectonic plates
- dense rock formations under the topsoil
- buildup of sediment on the ocean floor

the removal of underground resources