Cultivable land is defined as

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Q: 146 (SSC/NA)
Cultivable land is defined as

question_subject: 

Science

question_exam: 

SSC

stats: 

0,18,27,12,13,2,18

keywords: 

{'cultivable land': [1, 0, 0, 0], 'cultivable waste land': [1, 0, 0, 0], 'land': [0, 0, 0, 1], 'fallow land': [2, 0, 0, 1], 'total fallow lands': [1, 0, 0, 0], 'current fallow lands': [1, 0, 0, 0], 'old fallow lands': [1, 0, 0, 0], 'crops': [6, 1, 6, 7], 'net sown area': [1, 0, 1, 2]}

Option 1 defines cultivable land as land that is actually being used for growing crops. This means that only the land that is currently under cultivation is considered cultivable land.

Option 2 defines cultivable land as not only the land under crops, but also includes cultivable waste land and fallow land. Cultivable waste land refers to land that has the potential to be used for cultivation but is currently not being used. Fallow land refers to land that has been left uncultivated for a specific period of time.

Option 3 includes old fallow lands and current fallow lands in the definition of cultivable land. Old fallow lands are those that have been left uncultivated for a longer period of time, while current fallow lands are those that have recently been left uncultivated.

Option 4 defines cultivable land as the total fallow lands (both old and current) plus the net sown area. Net sown area refers to the total area of land on which crops are currently being grown.

Therefore, the correct answer is option 4 as it includes both the fallow lands and the area currently under cultivation.