He main reason tommy might use static stretching is

to relax his entire body
to prepare his muscles for sports
to increase his long term flexibility
to slow his body down after exercis

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