According to Ibn Battuta, the Indian city of _________ was no less, and easily rivalled Delhi in size.

Daulatabad

The correct answer is Option (1) → Daulatabad

Ibn Battuta, the 14th-century Moroccan explorer and scholar, made extensive travels throughout the Islamic world, including India. According to his writings, he visited the city of Daulatabad and was impressed by its size and significance. Daulatabad, also known as Devagiri, was the capital of the Yadava dynasty before being taken over by the Delhi Sultanate. Ibn Battuta's observations highlight the city's grandeur and suggest that, in terms of size, it could rival the capital city of Delhi during that period. Daulatabad's historical significance and architectural marvels likely contributed to its prominence during Ibn Battuta's travels.

So, the correct option is [1].