India's southern neighbours across the sea consist of the ______________ island countries.

Correct option is B

The correct answer is (b) two.
· Corrected Geographical Context: India's southern neighbors across the sea include two island countries: Sri Lanka and Maldives. These nations are located to the south of the Indian mainland in the Indian Ocean.
Information Booster:
· Sri Lanka: Located to the southeast of India, Sri Lanka is separated from the Indian subcontinent by the Palk Strait and the Gulf of Mannar. It shares deep historical and cultural ties with India.
· Maldives: Situated further south in the Indian Ocean, the Maldives is an archipelago of 26 atolls, known for its significant strategic maritime location and as a major tourist destination.