Select the biofertilizer in the following :

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Q: 14 (SSC/NA)

Select the biofertilizer in the following :

question_subject: 

Science

question_exam: 

SSC

stats: 

0,31,21,8,2,11,31

keywords: 

{'biofertilizer': [1, 0, 0, 0], 'ammonium sulphate': [2, 2, 1, 1], 'compost': [1, 0, 0, 0], 'green algae': [2, 0, 0, 0], 'algae': [2, 0, 0, 0], 'cattle dung': [1, 0, 0, 0]}

Option 1: Compost - Compost is not a biofertilizer. It is a form of organic matter that is added to the soil to improve its structure and provide nutrients.

Option 2: Ammonium sulphate - Ammonium sulphate is a chemical fertilizer that provides nitrogen to plants. It is not a biofertilizer.

Option 3: Cattle dung - Cattle dung is a source of organic matter and nutrients for plants. It contains beneficial microorganisms that can improve soil fertility and plant growth, making it a biofertilizer.

Option 4: Algae and blue-green algae - Algae and blue-green algae are types of biofertilizers. They are rich in nutrients and can fix atmospheric nitrogen, making it available to plants. They also enhance soil fertility and improve soil structure.