A visionary engineer and statesman who played a key role in the development of Karnataka:

Here is a brief description of each option:

• A) Sir M. Visvesvaraya was a visionary engineer and statesman who played a key role in the development of Karnataka.
• B) Dr. M.S. Swaminathan is a world-renowned agricultural scientist who is known as the “Father of Green Revolution”. He is also the founder of the Indian Council of Agricultural Research (ICAR).
• C) E. Sreedharan is a civil engineer who is known as the “Metro Man” for his role in the construction of the Delhi Metro. He is also the former Managing Director of the Delhi Metro Rail Corporation (DMRC).
• D) Verghese Kurien is a social entrepreneur who is known as the “Father of the White Revolution”. He is also the founder of the National Dairy Development Board (NDDB).