I think it is abdominal muscles
Answer:
OD
Explanation:
OD is the answer because her friend's supported her through the journey, which is her social environment so I hoped I helped:
True the heart like any muscle strengthens when you use it
It Effects Population And can Cause Suicide of the Victims Family or Friends.
Also The Drugs can Help People Like Weed Can Help People Get Better.
Sorry if this is Not What You Were Looking For i'm Only a Teenager.