According to Ibn Battuta which city rivaled Delhi in terms of its size?

Daulatabad

The correct answer is Option 3-  Daulatabad

According to Ibn Battuta,  Daulatabad rivalled Delhi in terms of its size.

Ibn Battuta found cities in the subcontinent full of exciting opportunities for those who had the necessary drive, resources and skills. Ibn Battuta described Delhi as a vast city, with a great population, the largest in India. Daulatabad (in Maharashtra) was no less, and easily rivalled Delhi in size.

Ibn Battuta’s description of Daulatabad: In Daulatabad there is a market place for male and female singers, which is known as Tarababad. It is one of the greatest and most beautiful bazaars.