The answer to this is Optical mouse.
The reason the answer is optical mouse is because the optical mouse is a computer mouse which uses a light source, typically a light-emitting diode, and a light detector, such as an array of photodiodes, to detect movement relative to a surface.
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Answer:
A. Connectivity
Explanation:
I just answered this question.
Some people either add a shape as I do. But for this particular question it would be, either add word art or create a list with bullets. I would rather do word art or insert shape because that means you do not have to get the single bullet.
I really do hope this helped you. I hope you have a great day. And if I am incorrect I apologize.
B is better than any other one's I think.
The equipment that move the fabric forward are called "Hem guides"