To answer this question, you need to be familiar with the records and achievements of left-handed batsmen in T20 Internationals. Let's go through each option to understand why it is correct or incorrect:
Option A) Chris Gayle - Chris Gayle is a renowned left-handed batsman known for his powerful hitting in T20 cricket. While he holds several records in T20 cricket, he does not hold the record for the fastest 50 in 12 balls in T20 Internationals. Therefore, this option is incorrect.
Option B) Mathew Hayden - Mathew Hayden is a former Australian left-handed batsman who had a successful career in international cricket. However, he is not known for holding the record for the fastest 50 in 12 balls in T20 Internationals. Therefore, this option is incorrect.
Option C) Yuvraj Singh - Yuvraj Singh, an Indian left-handed batsman, holds the record for scoring the fastest 50 in 12 balls in T20 Internationals. He achieved this feat during the 2007 ICC World Twenty20 tournament. Therefore, this option is correct.
Option D) Sanath Jayasuriya - Sanath Jayasuriya, a former Sri Lankan left-handed batsman, had a successful career in international cricket. However, he does not hold the record for the fastest 50 in 12 balls in T20 Internationals. Therefore, this option is incorrect.
The correct answer is C) Yuvraj Singh. This option is correct because Yuvraj Singh holds the record for scoring the fastest 50 in 12 balls in T20 Internationals.