The question asks for the largest landlocked saltwater lake in India.
Upon examining the options, we analyze the geographical and natural characteristics of each lake:
- Vembanad Lake - Although significant, this lake is an estuarine backwater and connected to the Arabian Sea, thus not entirely landlocked.
- Chilika Lake - Known for being a large brackish water lagoon, it is connected to the Bay of Bengal, hence not a completely landlocked lake.
- Sambhar Lake - Situated in Rajasthan, Sambhar Lake is a saltwater lake surrounded by land, making it the largest of its kind in India.
- Chital Lake - There is scarce documentation or recognition of this lake qualifying as significant on the national level.
- Pulicat Lake - It is a brackish water lagoon also connected to the Bay of Bengal and therefore not landlocked.
Given the analysis, the correct answer is:
Sambhar Lake