If i let the houes at 7; 32 and i wake a mile to school and i got here at 748 how meany min did it take me to get to school

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

They need to contract and relax

Answer(d) they all send signals from the brain to the body through long axons in the vertebral column;