Answer:
The correct answer is - incomplete proteins do not include all essential amino acids.
Step-by-step explanation:
Proteins can be either complete proteins or incomplete proteins, complete proteins have all the essential amino acids required for our body whereas incomplete protein does not include all essential amino acids.
Animal-based proteins are generally known as complete proteins such as meat, poultry, fish, eggs, milk, and cheese. Quinoa and soy are two vegetarian sources of complete proteins as these are plant-based proteins.