Explanation:

- Anushka Sharma: Known for her support towards animal rights and welfare, she has in the past been recognized by PETA for her efforts in various animal-related causes.

- Alia Bhatt: She promotes sustainable and cruelty-free fashion. Alia is a notable advocate for animal welfare but was not the PETA India Person of the Year for 2021.

- Deepika Padukone: While active in various charitable activities, she was not the recipient of the PETA India Person of the Year for 2021.

- Kiara Advani: She is popular in the film industry but there is no known connection to her receiving PETA's 2021 recognition.

The person who was actually honored as PETA India Person of the Year for 2021 is Alia Bhatt.