Who out of the following became the first lady President of South Korea in Feb, 2013?

Correct answer: B) Park Geun-hye. She was elected in December 2012 and sworn in on 25 February 2013, making her South Korea's first woman president. The phrase 'first lady President' here means the first woman to hold the office, not the spouse of a president.

Why the others are wrong:

• Park Geun-hye is the daughter of Park Chung-hee, who ruled South Korea from 1963 to 1979. Aspirants often pick her on the basis of the surname, but the question is about the 2013 office-holder, and she is that person.
• Park Jong-sun and Kang Ji-won did not hold the presidency. The surname 'Park' appears in two options as a distractor.
• Kim Soon-ja was not the head of state in 2013.

Core concept: executive leadership and political history of East Asian democracies, which fits a Current Affairs question on world leaders. For Mains, her term is a useful case study on dynastic politics and on how impeachment works in presidential systems.

Update: Park was impeached by the National Assembly in December 2016, and the Constitutional Court removed her from office in March 2017. Her presidency therefore ended early, and the answer to 'who became the first woman president in 2013' remains B.

Trap: reading 'first lady' as the spouse of a president, or choosing a name you recognise from the surname alone.