On a per-mass basis over 100 years, N2O has a far higher GWP than CO2 or CH4, so option b is correct.

COSO's five components are control environment, risk assessment, control activities, information & communication, and monitoring; external audit is separate from these internal control components.

Kazakhstan is the largest country by land area among Muslim-majority states, so it is the biggest Muslim country by area.

As stated, Sri Lanka experienced massive protests driven by an economic crisis and shortages of fuel.

Wind energy comes from the motion of air, so it is kinetic energy derived from moving air masses.

Oxygen makes up roughly half of the Earth's crust by mass and is a major component of both water and the atmosphere.

The report shows FBR's tax expenditures amounted to 2% of GDP in FY 2017–18.

'Still' indicates persistence despite competition and 'media' refers to communication channels, so 'still : media' completes the sentence.

Government strategic infrastructure includes communication, energy, and water systems, so radio stations, power plants, and water canals are all covered.

The incumbent UN Secretary-General began his term on 1 January 2017.