Explanation:

- Option 1: Hindi

- Hindi is the most spoken language in India according to Census 2011.

- It serves as a mother tongue to many Indians and a second language to many more.

- Around 44% of the population reported Hindi as their primary language.

- Option 2: Marathi

- Marathi is prominent in Maharashtra.

- It ranks among the top regional languages but isn't the most spoken overall.

- Option 3: English

- English is widely used for official and business purposes.

- It isn't the native tongue for a significant portion of the population.

- Option 4: Telugu

- Telugu is the primary language in Andhra Pradesh and Telangana.

- It is widely spoken, but not as extensively as Hindi.

Answer: Option 1 - Hindi is correct.