The correct answer is: Bangladesh.
Muhammed Yunus is a Bangladeshi economist and social entrepreneur who is the founder of the Grameen Bank, which provides microcredit to poor people in Bangladesh. He was awarded the Nobel Peace Prize in 2006 for his work in microfinance.
Sri Lanka is an island country in South Asia. Pakistan is a country in South Asia. The Maldives is an island country in South Asia.
All of these countries are located in South Asia. However, Bangladesh is the only country in South Asia that is home to Nobel Laureate Muhammed Yunus.