Answer:
<u><em>The answer is</em></u>: <u>A. awkward posture.</u>
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Explanation:
Forced postures and repetitiveness in the plastering of ceilings. Ceiling work is the worst from an ergonomic point of view. The main problems that characterize it are the following:
- Posture of neck extension and very high flexion of the arms.
- Extension of the wrists, having to apply a considerable force with them, associated with holding the trowel or talocha at heights above the level of the shoulders.
- Asymmetric repetitive movements, the most frequent is the lateral inclination of the trunk and arms, although there are also situations of trunk rotation.
<u><em>The answer is</em></u>: <u>A. awkward posture.</u>