Explanation:

- Option 1: Abhishek Verma

- He is an accomplished Indian archer, but he is known for his achievements in compound archery.

- He was not awarded the Arjuna Award in the Para Archery discipline in 2021.

- Option 2: Harvinder Singh

- Harvinder Singh is a prominent Indian para archer.

- He indeed won the Arjuna Award in 2021 for Para Archery.

- Correct Answer

- Option 3: Rishabh Yadav

- There is limited public information available linking him to Para Archery.

- He did not receive the Arjuna Award in this category in 2021.

- Option 4: Aman Saini

- There is no notable record of him receiving the Arjuna Award for Para Archery in 2021.