The correct answer is (c), Shanghai.
Prime Minister Manmohan Singh, having taken charge of the new government after 2009 elections, met Pakistan President Asif Ali Zardari for the first time on 16 April 2009 on the sidelines of the 14th Shanghai Cooperation Organization (SCO) summit in Shanghai, China.
The meeting was significant as it was the first time that the two leaders had met since the 2008 Mumbai attacks. The meeting was held in a cordial atmosphere and the two leaders discussed a range of issues, including terrorism, trade and Kashmir.
The meeting was seen as a positive step towards improving relations between India and Pakistan.