D) Kesari — Bal Gangadhar Tilak published the Marathi newspaper Kesari, which became a powerful medium for nationalist ideas.
The answer is Kesari. Tilak used Kesari (meaning "Lion") to spread nationalist sentiments and criticise colonial rule. This is a standard fact tested in CBSE Class 10 History (Chapter 5 – Print Culture and the Modern World). The source passages do not directly mention Tilak and Kesari, but this is part of the prescribed textbook content students are expected to know.