Invisible damage to the body resulting from repeating a movement often is a

The answer is Microtrauma.

The correct answer is "Repetitive strain injury".

Explanation:

The repetitive strain injury (RSI), also known as overuse syndrome, is defined as the invisible damage to the body resulting from repeating a movement. These type of damage can affect the muscles, nerves, ligaments and tendons. RSI mostly affects elderly people and could be the result of repeating a movement with an improper technique or just by overusing the movement.

it means

miss jennifer is buying pencils in packs of 12, notebooks in packs of 16, and red pens in boxes of 20. she needs to have the same number of pencils, notebooks, and red pens. how many packs of each type should she buy?

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