Tattvabodhini Patrika promoted the study of India’s past in which language?

The correct option is Bengali.

Step-by-step Explanation:
1. Origin of Tattvabodhini Patrika: The Tattvabodhini Patrika was a highly influential monthly journal established on August 16, 1843, by Debendranath Tagore. It served as the organ of the Tattvabodhini Sabha, which was founded in 1839.
2. Aims and Objectives: The primary goals of the journal were to propagate the ideas of Brahmoism, counter the propagation of Christian missionary activities, and promote a systematic and scientific study of India's ancient past, scriptures, and heritage.
3. Promotion of Language: To connect deeply with the local intelligentsia and the general public in Bengal, the journal chose Bengali as its medium of communication. In doing so, it significantly promoted the study of India's history, philosophy, and sciences in the Bengali language, which also played a foundational role in the development of modern Bengali prose.