Respuesta :
The greatest negative impact of a new hydroelectric dam is: B. Changes in the surrounding landscape.
What is a Hydroelectric Dam?
A hydroelectric dam is a reservoir of water that can be used to generate electricity. These dams can cause a change in the movement of water and the physical characteristics of the soil.
All of these can negatively affect the landscape of the community where the dam is situated.
Learn more about hydroelectric dams here:
https://brainly.com/question/8934285