The correct options are
A Shri Banwarilal Purohit was appointed as the Governor of Tamil Nadu by the President of India
B Rohit's parents are from Madurai but he grew up in Pune. He is, however, an Indian citizen.
D A case was fought in the Kerala High Court. Dissatisfied with the verdict, the petitioners appealed to the Supreme Court.
The Indian Constitution has a few 'unitary' features such as:
1. Appointment of the Governor of a state by the centre.
2. Single citizenship given to Indian residents.
3. Emergency powers
4. Integrated Judiciary
A rigid Constitution, however, is a federal feature.