Answer: (Detailed Solution Below)
Detailed Solution:
The correct answer is “Lacustrine plain”.
The Imphal Basin is a large depression located in the Manipur hills of Northeast India. It is surrounded by hills on all sides and is believed to have been formed due to tectonic activity. The basin is drained by several rivers and streams, including the Imphal River.
The Imphal Basin is a fine example of a lacustrine plain, which is a type of low-lying area that is characterized by the presence of lakes, marshes, and swamps. These plains are often formed in areas where there is a high degree of tectonic activity or where there are large amounts of sediment deposited by rivers and other water bodies.
In the case of the Imphal Basin, the depression was formed due to tectonic activity, and it has since been filled with sediment deposited by the Imphal River and other nearby water bodies. The basin is home to several lakes and wetlands, including the Loktak Lake, which is the largest freshwater lake in Northeast India.