Correct Answer - Option 3 : Nirmala
Bank employees : Vimala, Kamla and one more
Unemployed : Amala and Komala
Tennis players : Komala, Nirmala and two more
Postgraduates in Sociology : Amala, Kamla, Komala and Nirmala (Kamla and Nirmala are bank employees because Amala and Komala are unemployed.)
Postgraduate in Commerce : Shyamala
Therefore, Nirmala is both tennis player and a bank employee.
Hence, option 3 is the correct answer.