Do you think a song on how to wash your hands teaching children about hygiene explain

Yes but there is other ways to show a child how to wash their hands.

It does because the child remembers the song better than just words. However this is not the only effective method

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