The benefit of the circuit of fetal blood course through the ductus arteriosus is the ductus arteriosus will permit more blood to go to the placenta and sidestep the lungs (since there is no blood required there yet). I hope the answer will help you.
I believe your answer is d. Derek is hungry or needs to have his diaper changed.
Option c could be correct but option d seems more likely
I hope this is the answer you're looking for and good luck.
