The question asks which of the provided language and composer pairs correctly matches a composer who has created a piece based on the Mahabharata theme with the language of their work.

Option 1 suggests Sarladasa, but he was not a Bengali poet but a Hindi poet. Option 2 claims Kasirama was an Oriya poet but there is no record of a such a poet. Therefore, options 1 and 2 are not valid.

Option 3 suggests Tikkana but this is also incorrect because Tikkana was a Telugu poet, not a Marathi poet.

Option 4 is the correct answer. Pampa is a well-known Kannada poet who indeed worked on the Mahabharata theme. Hence, he and his work are correctly matched to the Kannada language.