Butter is made mainly from—

Correct option is D

• Butter is produced by churning cream, the fat-rich portion separated from milk.
• During churning, fat globules coalesce and separate from the liquid portion (buttermilk), forming butter granules that are worked into a uniform mass.
• Cream contains the highest concentration of milk fat, making it the ideal raw material for butter production.
• Whey (a) is the liquid left after cheese making and contains very little fat.
• Skim milk (b) has most of the fat removed, so it cannot be used to make butter.
• Milk fat (c) is the main component of butter, but butter is not made directly from isolated milk fat—it is obtained from cream through churning.