Question

select the choice that best completes the following statement.
keep your back properly aligned by making sure your ears, shoulders and hips:
a) form an \s\ shape
b) stay in a straight line
c) are tilted to the side at an angle
d) have the right personal protective equipment

Explanation:

Proper back alignment involves keeping the body in a neutral posture. When ears, shoulders, and hips stay in a straight line, it helps maintain the natural curvature of the spine and reduces strain. An "S" shape (a) is the natural spinal curve but not about alignment of these body parts in a straight - line sense for the question's context. Tilted at an angle (c) would cause misalignment. Personal protective equipment (d) is unrelated to body alignment.

Answer:

B. Stay in a straight line