The different dialects of Manipuri are primarily classified based on:

The correct answer is: a) Region.

Manipuri is a language spoken by the Meitei people of Manipur, India. It is a member of the Kuki-Chin-Mizo language family. There are several dialects of Manipuri, which are primarily classified based on region. The three main dialects are:

• Meitei dialect is spoken in the Imphal Valley.
• Tangkhul dialect is spoken in the Ukhrul district.
• Maring dialect is spoken in the Senapati district.

The dialects of Manipuri differ in pronunciation, vocabulary, and grammar. However, they are all mutually intelligible.

The other options are incorrect because:

• Social class is not a major factor in the classification of Manipuri dialects.
• Clan affiliation is not a major factor in the classification of Manipuri dialects.
• Religious practices are not a major factor in the classification of Manipuri dialects.