'Dipavamsa' and 'Mahavamsa' related to Buddhism were composed in which foreign country?

Sri Lanka

The correct answer is Option (3) → Sri Lanka

As Buddhism travelled to new regions such as Sri Lanka, other texts such as the Dipavamsa (literally, the chronicle of the island) and Mahavamsa (the great chronicle) were written, containing regional histories of Buddhism. Many of these works contained biographies of the Buddha. Some of the oldest texts are in Pali, while later compositions are in Sanskrit.