A Directly, more
I just answered this question on USATEST PREP and got it right.
The function of the digestive system is to break down food so B.
You will be able to recover from exercise when you are fit because your body can be more quick and agile and development more to the best of it's abilities it will be stronger and more effective to complete any activities . your body can use it's energy for more important matters instead of it turning into waste . because there will be nothing to hold your body back from using it's full potential.
An organisms phenotype is the way it’s genotype is expressed
Well you should know the Cardiac works the heart so that's not voluntary the smooth muscle is clarly used involuntary, so that would make it the skeletal.