I think it is abdominal muscles
D. A consumer buys or trades to receive a commodity available for sale or exchange
Answer:
C. An AED
Explanation:
A portable device that examines a person's cardiac rhythm and administers an electric shock to the heart is known as an automated external defibrillator (AED).
The backpack's main force that it it is exerting on the body's back and hips is coming from gravity, and can pull the spine downwards. This is why it's important to ear both straps.
It depends on the type of drug you mean, such as medicinal drugs like marijuana, or bad drugs like cocaine or heroine. But the best answer(in my opinion) is B.
