Hi PSIR Optional guys. Some value addition on Sri Aurobindo for that one extra mark(A question can come on the topic since this is his 150th birth year)-
1.Book- Reading Sri Aurobindo(edited by Gautam Chikermane and Devdip Ganguli)- 'In a world beset with crisis of every kind, the importance of Sri Aurobindo's vision cannot be overstated'.
2. Book- Prophet of Indian Nationalism- By Dr Karan Singh- Believed that for an individual to be a nationalist, one has to embrace the religion of nationalism.
Best of luck guysssss!