Concept:
Milk composition varies significantly between mammalian species to meet the nutritional needs of their young.
• Ruminants: Generally have higher fat and protein than humans.
• Total Solids: Includes fat, protein, lactose, and minerals.
Step 1: Analyzing Buffalo and Cow milk.
Buffalo milk is the richest in fat among common dairy animals, averaging 6–8%.
Cow milk typically contains between 3.5% and 4.5% fat.
Step 2: Analyzing Goat, Camel, and Human milk.
Goat milk is very similar to cow milk, usually ranging from 3.5% to 4.0%.
Camel milk is leaner, containing approximately 2.5% to 3.0% fat.
Human milk is highly variable but generally has the lowest total solids among these.
Step 3: Establishing the order.
Based on standard nutritional averages, the decreasing order of fat is:
Buffalo $\gt $ Cow $\gt $ Goat $\gt $ Camel $\gt $ Human.
Final Answer: (C)