Which of the following describes the importance of flexibility?
a. reduces chance of injury
b. decrease resting heart rate
c. increases the chance of lower back pain
d. increases post exercise pain

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