Specific Humidity is measured by

Answer: Option C

Specific humidity is the mass of water vapour in a unit mass of moist air. Specific humidity is at a maximum in the tropics and declines as one moves poleward reaching minimum values in each polar region.
It can be calculated using the formula:
Specific humidity $$=6.11\times 10^{\frac{7.5\times \mathbf{dew}\mathbf{point}}{237.3+\mathbf{dew}\mathbf{point}}}$$
Its measuring unit is g/g or, kg/kg.