The earliest literary works in Assamese can be traced back to:

The correct answer is: a) Charyapadas.

Charyapadas are a genre of Assamese Buddhist poetry that dates back to the 7th century. They are written in a mixture of Assamese and Sanskrit and are characterized by their use of simple language and imagery. The Charyapadas are an important part of Assamese literature and culture, and they provide insights into the religious and cultural beliefs of the people of Assam during the 7th century.

The other options are incorrect because:

• b) Mahabharata translations are not the earliest literary works in Assamese. The earliest known translation of the Mahabharata into Assamese was made in the 16th century.
• c) Buranjis are historical chronicles that were written in Assamese from the 16th century onwards.
• d) Sattras manuscripts are religious texts that were written in Assamese from the 16th century onwards.