The correct answer is option 3: Four.

This means that the speakers of major Indian languages belong to four different language families.

Language families are groups of languages that are related to each other and share common characteristics. In India, there are four main language families:

1. Indo-Aryan: This language family includes languages such as Hindi, Bengali, Punjabi, and Marathi. It is the largest language family in India, with a significant number of speakers.

2. Dravidian: This language family includes languages such as Tamil, Telugu, Kannada, and Malayalam. It is the second largest language family in India and is mainly spoken in the southern part of the country.

3. Austro-Asiatic: This language family includes languages such as Santali, Mundari, and Khasi. It is spoken by a smaller number of people compared to Indo-Aryan and Dravidian languages.

4. Tibeto-Burman: This language family includes languages such as Manipuri, Bodo, and Sherpa. It is mainly spoken in the northeastern part of India.

It`s important to note that while these four language families cover a majority of the major languages spoken in India, there are also several other language families represented