I used to eat a lot and now I don't. I'm doing virtual school right now. before the pandemic I was actually at school and really the only time I ate was sometimes breakfast, lunch, a snack at home, and dinner. Is that why I don't eat as much or is it something else?​

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