The correct answer is option 1: 22 languages. The 8th Schedule of the Indian Constitution recognizes 22 languages. These languages are Assamese, Bengali, Bodo, Dogri, Gujarati, Hindi, Kannada, Kashmiri, Konkani, Maithili, Malayalam, Manipuri, Marathi, Nepali, Oriya, Punjabi, Sanskrit, Santali, Sindhi, Tamil, Telugu, and Urdu. These languages are recognized to promote linguistic diversity and protect the interests of different linguistic communities in India. It is important to note that the number of languages in the 8th Schedule can be modified by Parliament through a constitutional amendment.