The Palk Strait separates India and Sri Lanka. It lies between the southeastern coast of India, around Tamil Nadu, and the northern part of Sri Lanka.
The strait is a relatively shallow water body and is associated with the Gulf of Mannar and the Palk Bay region. The other country pairs listed are not separated by the Palk Strait.
This is a basic map-based question, and remembering the location of the strait helps in understanding India's maritime neighbourhood. For exam preparation, retain the defining feature and connect it to the named place, process, or concept. Read each option precisely: similar geographic terms can refer to different locations or mechanisms. This distinction helps apply the fact correctly rather than relying on vague recall.

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