Explanation:

Option 4th is correct.

• The Tokyo Paralympic 2020 was a historic event with many memorable moments for Indian athletes.

• Avani Lekhara was the Indian flag bearer at the closing ceremony of the 2020 Tokyo Paralympics. Lekhara is a shooter who won a gold medal in the 10m air rifle standing SH1 final. 

Explanation

• Avani Lekhara was the first Indian woman to win a Paralympic gold medal. 

• She set a new Paralympic record score of 249.6 in the 10m air rifle standing SH1 final in Tokyo. 

• Lekhara also defended her 10m air rifle shooting SH1 title at the 2024 Paris Paralympics. 

• Option 1: Devendra Jhajharia - He is a renowned Indian Paralympic javelin thrower but wasn't the flag bearer at the closing ceremony.

• Option 2: Tek Chand - The shot putter was the flag bearer for India at the opening ceremony, not at the closing ceremony.

• Option 3: Sundar Singh Gurjar - He is a talented javelin thrower but wasn't the flag bearer at the closing ceremony.

Hence option 4th is correct.