To answer this question, we need to look at the players who have hit a high number of sixes in their T20 International career. Let's go through each option to determine who has hit the maximum number of sixes:
Option A) Chris Gayle - Chris Gayle is known for his powerful hitting and has hit a significant number of sixes in his career. However, he has not hit the maximum number of sixes in T20 International cricket.
Option B) Yuvraj Singh - Yuvraj Singh is a big-hitting batsman and has a reputation for hitting sixes. He is famous for hitting six sixes in an over in a T20 International match. Yuvraj Singh is the correct answer as he has hit the maximum number of sixes (30) in T20 International career.
Option C) Sanath Jayasuriya - Sanath Jayasuriya was an explosive batsman, but he did not hit the maximum number of sixes in T20 International cricket.
Option D) Shahid Afridi - Shahid Afridi is known for his aggressive batting style and has hit numerous sixes in his career. However, he did not hit the maximum number of sixes in T20 International cricket.
The correct answer is B) Yuvraj Singh, as he has hit the maximum number of sixes (30) in T20 International career.