**Core Concept**
The amino acid score of animal foods refers to the ratio of essential amino acids (EAAs) to non-essential amino acids (NEAAs) in the food, which is crucial for protein synthesis and overall health. Amino acid scoring is a method used to evaluate the quality of dietary protein, with animal-derived foods generally having a higher amino acid score than plant-based foods.

**Why the Correct Answer is Right**
Amino acid scoring is calculated by determining the ratio of EAAs to NEAAs in the food. EAAs, such as leucine, isoleucine, and valine, are crucial for protein synthesis and cannot be produced by the body. Animal-derived foods like meat, fish, and eggs are rich in EAAs and have a higher amino acid score compared to plant-based foods like legumes, nuts, and seeds. This is because animal-derived foods contain all the necessary EAAs in the right proportions, making them a complete source of protein.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not take into account the specific ratio of EAAs to NEAAs in animal-derived foods.
**Option B:** This option is incorrect because it does not consider the fact that plant-based foods often lack one or more EAAs, making them incomplete sources of protein.
**Option C:** This option is incorrect because it does not provide a clear or accurate definition of amino acid scoring.

**Clinical Pearl / High-Yield Fact**
It's essential to note that a diet rich in animal-derived foods can provide all the necessary EAAs, while plant-based diets may require careful planning to ensure adequate protein intake and amino acid balance.

**Correct Answer: B. Animal-derived foods generally have a higher amino acid score than plant-based foods due to their higher content of essential amino acids.**