Atmospheric conditions are well governed by humidity. Which one among the following may best define humidity?

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Q: (CDS-I/2019)
Atmospheric conditions are well governed by humidity.
Which one among the following may best define humidity?

question_subject: 

Geography

question_exam: 

CDS-I

stats: 

0,45,40,17,5,18,45

keywords: 

{'atmospheric moisture': [0, 0, 0, 1], 'humidity': [1, 0, 2, 0], 'moisture content': [0, 1, 0, 0], 'water droplets': [0, 0, 0, 3], 'condensation': [1, 0, 1, 1], 'atmospheric': [0, 0, 0, 2], 'atmosphere': [1, 1, 4, 7], 'air': [1, 0, 0, 0], 'conditions': [0, 0, 0, 1], 'deposition': [0, 2, 2, 2], 'water': [65, 15, 80, 129]}

Option 1: This option describes the form of suspended water droplets caused by condensation. While this is related to humidity, it does not fully define it. Humidity refers to the amount of moisture present in the air, not just the physical form of water droplets.

Option 2: This option refers to the deposition of atmospheric moisture. Deposition does occur when there is high humidity, but it does not encompass the entire concept of humidity. Humidity involves measuring the moisture content in the air, not just the process of deposition.

Option 3: This option describes almost microscopically small drops of water that are condensed from and suspended in the air. This is a more accurate description of what humidity entails. Humidity refers to the presence of water vapor in the air, which can condense and form these small water droplets.

Option 4: This option correctly defines humidity as the moisture content of the atmosphere at a particular time and place. It encompasses the overall amount of water vapor in the air, which can fluctuate depending on factors such as temperature and pressure. This is the best definition of humidity among the given options.

Therefore, the correct answer is 4.