निम्नलिखित में से किस विकल्प में कार्बोहाइड्रेट मुख्य/प्रमुख पोषक तत्व के रूप में पाया जाता है?

Which nutrient is known as the 'building block' of the body?

Doctors advise cooking food in oil rather than vegetable ghee because:

What type of biomolecule is Casein found in milk?