Zakat is the third pillar of Islam (the compulsory almsgiving), so Zakat is the correct answer.

Instagram was launched in 2010, so 2010 is the correct launch year.

The province’s name change to Khyber Pakhtunkhwa was effected on 19 April 2010, so 19 April 2010 is the correct date.

Maulana Abul Kalam Azad founded and published the Urdu newspaper Al‑Hilal in 1912, which is why his name is the correct choice.

Ma'ariful Quran is a renowned eight-volume Urdu commentary of the Holy Qur'an written by the Grand Mufti of Pakistan, Mufti Muhammad Shafi Usmani.

Based on the 1998 census data, which would have been the most relevant official figures around 2010, Bajaur Agency had the largest population among the Federally Administered Tribal Areas (FATA) of Pakistan. South Waziristan Agency was the largest by geographical area, not population [2, p20]. The provided source incorrectly states South Waziristan as the answer and confuses population with size in its explanation.

SilkAir was the regional airline subsidiary of Singapore Airlines, based in Singapore [2, p19]. It primarily served short to medium-haul destinations in the Asia-Pacific region. (Note: SilkAir was fully integrated into Singapore Airlines in 2021, but was a distinct entity in 2010).

In the years around 2010, Helmand province in southern Afghanistan was consistently the largest opium-producing region in the country, accounting for a significant portion of Afghanistan's and the world's illicit opium production [2, p18]. Factors contributing to this included insecurity, lack of alternative livelihoods, and favorable cultivation conditions.

General Stanley McChrystal served as the Commander of U.S. Forces in Afghanistan (USFOR-A) and also as the Commander of the International Security Assistance Force (ISAF) in Afghanistan [2, p17]. He held these key positions from June 2009 until his resignation in June 2010.

As of 2010, China was the world's largest emitter of carbon dioxide (CO2) [2, p17]. This was primarily due to its rapid industrialization, significant manufacturing sector, and heavy reliance on coal as an energy source. The increase in CO2 emissions from China had surpassed other major emitters like the United States in the years leading up to 2010.