Zillur Rahman served as the President of Bangladesh from 2009 to 2013. The other options are also Bangladeshi presidents but from different time periods - Iajuddin Ahmed (2002-2009), Ziaur Rahman (1977-1981), and Sheikh Mujibur Rahman (1971-1975, also the founding father). Without a specific year or time period in the question, this question could be ambiguous, though Zillur Rahman is the most recent among the options.