Why do teens not need to eat as much from the protein food group?

I’m not and expert, but the reason why teens don’t need to eat a lot of protein is because they are in the development stage. This means that their metabolism increases rapidly and they don’t need to worry about their weight.

Aand b would both be correct

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b