Answer: (d) Rann of Kutch
The best example of repeated falls in sea level, giving rise to present-day extensive marshland, is (d) Rann of Kutch.
Explanation:
The Rann of Kutch, located in the state of Gujarat in western India, is a large salt marshland. It is an extensive area characterized by salt flats, mudflats, and seasonal wetlands. The formation of the Rann of Kutch can be attributed to repeated falls in sea level over time.
During geological history, the area of the Rann of Kutch was periodically submerged by the sea and later experienced the retreat of seawater. These repeated cycles of rising and falling sea levels led to the deposition of sediment and formation of marshy terrain. As the sea level fell, the area was left with shallow depressions and saline mudflats, creating the unique landscape of the Rann of Kutch.
Authenticative Reference Source:
The information provided above is based on general knowledge and understanding. However, if you are looking for authentic reference sources, I would recommend consulting the following:
NCERT Geography textbooks for relevant class levels (available online or in print).
Government of India websites, such as the Ministry of Environment, Forest and Climate Change (https://www.moef.gov.in/) or the Geological Survey of India (https://www.gsi.gov.in/), for research publications or official reports related to the Rann of Kutch.
International organizations such as the United Nations Environment Programme (UNEP) or the International Union for Conservation of Nature (IUCN), which may have research or publications related to wetlands and marshlands.
