Hey ...
The answer is D. He is using muscular strength.
Hope this helps!
Answer:
everything except "A patient has normal respirations when sitting up"
Explanation:
A lack of Vitamin C may lead to scurvy
First is contractions get stronger, then the baby is born, then umbilical cord is cut and lastly the placenta is pushed out.
http://www.nbchpn.org/pdf/NBCHPN_handbook.pdf
Your answer may be in there