To answer this question, we need to understand which umpire has officiated the most number of T20 Internationals.
Option A) Simon Taufel - This option is incorrect. Simon Taufel is a renowned umpire, but he has not officiated the most number of T20 Internationals.
Option B) MR Benson - This option is correct. MR Benson has officiated in the most number of T20 Internationals. He has umpired in 19 T20 Internationals, making him the umpire with the highest number of appearances in this format.
Option C) Billy Bowden - This option is incorrect. Billy Bowden is a well-known umpire, but he has not officiated the most number of T20 Internationals.
Option D) Asad Rauf - This option is incorrect. Asad Rauf is another well-known umpire, but he has not officiated the most number of T20 Internationals.
The correct answer is B) MR Benson. This option is correct because MR Benson has officiated in the most number of T20 Internationals (19).