Answer:
Both A and B, because if you have bad posture you will have weaker bones which can make you get hurt easier plus weaker bones will not be safe especially if you got in a car wreck.
This procedure would be a bronchoscopy
Answer:
My dog, my other dog, and most likely my other dog.
Explanation:
(ik they aren't people but they are close) :)
Answer - Calisthenics uses body weight. So when using Body weight workout the and moves such as Inverted Rows or Pull ups it is working body the motion and rotation of the arms, chest and multi-points of the area.
Reasoning - ^
D. Skeletal muscles I think (not completely sure)