The correct answer is option 2, Dominique Strauss-Kahn is the former Managing Director of the International Monetary Fund (IMF). It is important to note that the provided answer may not be up to date, as the Managing Director of the IMF can change over time.

Option 1, Rodrigo Rato, is not the current Managing Director of the IMF. He previously served as the Managing Director from 2004 to 2007.

Option 3, Daniel Vasella, is not associated with the IMF. He is a Swiss physician and business executive, known for his role as the CEO and Chairman of the pharmaceutical company Novartis.

Option 4, Alberto Foutana, is also not associated with the IMF. There is no widely recognized figure or notable individual with this name in relation to the position of Managing Director of the IMF.

It is always important to stay updated with current information as leadership positions can change.