Hydropower projects in Assam can have environmental impacts such as:

The correct answer is: d) All of the above

Hydropower projects can have a number of negative environmental impacts, including:

• Displacement of people: The construction of a hydropower project can require the relocation of people who live in the area where the project is being built. This can be a major disruption to people’s lives, as they may have to leave their homes, schools, and businesses.
• Disruption of river ecology: The construction of a hydropower project can disrupt the natural flow of a river, which can have a negative impact on the river’s ecosystem. This can include changes in water temperature, water quality, and sediment flow.
• Changes in sediment flow: The construction of a hydropower project can change the way that sediment moves through a river. This can lead to problems such as erosion and sedimentation downstream of the project.

In addition to these environmental impacts, hydropower projects can also have social and economic impacts. For example, the construction of a hydropower project can lead to the loss of jobs in the local area, as well as the displacement of people.

It is important to consider all of the potential environmental, social, and economic impacts of a hydropower project before it is approved.