The correct answer is: A. Indo-Aryan.
Urdu is an Indo-Aryan language that is spoken in Pakistan and India. It is the national language of Pakistan and one of the 22 official languages of India. Urdu is written in the Nastaʿlīq script, which is a variant of the Arabic script.
Indo-Aryan languages are a branch of the Indo-European language family. They are spoken in South Asia, Central Asia, and Southeast Asia. Some of the most well-known Indo-Aryan languages include Hindi, Punjabi, Bengali, Marathi, and Gujarati.
Dravidian languages are a branch of the Dravidian language family. They are spoken in South Asia, mainly in India and Sri Lanka. Some of the most well-known Dravidian languages include Tamil, Telugu, Kannada, and Malayalam.
Sino-Tibetan languages are a branch of the Sino-Tibetan language family. They are spoken in East Asia, Southeast Asia, and South Asia. Some of the most well-known Sino-Tibetan languages include Chinese, Tibetan, Burmese, and Nepali.
None of these is the correct answer because Urdu is an Indo-Aryan language.