The answer is false.....................................
Answer:
True ( in my option)
Explanation:
I took gym for 6 years of my school life and what I learn from those classes was to keep your back straight when you do any excrice because that would keep your back straight when your not doing excrice. I hope you like my answer.
The Correct answer is B: A posture disorder in which the spine curves up the back like a snake .
