Which among the following languages was added to the list of official languages in the Indian Constitution in 1967?

Sindhi

The correct answer is Option 2 - Sindhi

In 1967, Sindhi was added to the list of official languages in the Eighth Schedule of the Indian Constitution.


More about the Eighth Schedule of the Indian Constitution:

The Eighth Schedule of the Constitution of India lists the official languages of the country. Currently it Lists the following 22 languages:

Assamese
Bengali
Bodo
Dogri
Gujarati
Hindi
Kannada
Kashmiri
Konkani
Maithili
Malayalam
Manipuri
Marathi
Nepali
Odia
Punjabi
Sanskrit
Santali
Sindhi
Tamil
Telugu
Urdu

Evolution:
Originally, the Constitution included only 14 languages in the Eighth Schedule.
Over time, new languages have been added through amendments:
Sindhi (1967)
Konkani, Manipuri, Nepali (1992)
Bodo, Dogri, Maithili, Santali (2003)