The question asks about the recipient of the Fed Cup Heart Award in 2020. The correct answer is option 1: Sania Mirza.

Option 2: P V Sindhu is an Indian badminton player. While she is highly accomplished and has won numerous accolades, she did not win the Fed Cup Heart Award in 2020.

Option 3: Saina Nehwal is another Indian badminton player who has achieved great success in her career. However, she also did not win the Fed Cup Heart Award in 2020.

Option 4: Hima Das is an Indian sprinter who achieved recognition for her performances in athletics. However, she did not win the Fed Cup Heart Award in 2020.

Therefore, the correct answer is option 1: Sania Mirza. It is important to note that the Fed Cup Heart Award is given to players who represent their country with distinction, showing remarkable dedication and commitment. Sania Mirza, being a highly respected and accomplished tennis player from India, was deserving of this award in 2020.