Hunterschlender24
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To Stay Safe using ergonomics, you should: A. Create a static posture when performing repetitive task B. Omit unnecessary task and vary activities C. Work through any pain and discomfort until your body gets used to the task

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jazminepayan
A. Create a static posture when performing repetitive tasks.

will be your answer because it is helping by saying to find a good posture to help you not get hurt and do your task. 

I believe the answer is: B. Omit unnecessary task and vary activities

The main purpose of an ergonomics is to study worker's efficiency in the working environment. Efficiency could only be achieved if all time and efforts that workers made is spent accordingly, and focused solely to things that matters to their goals.