Which option represents a mid-range number of passes for vacuum machines?

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Mid-range passes in vacuum therapy are about using a moderate number of passes over the treatment area to achieve cleansing and stimulation without overdoing it. This balance keeps the skin safe while still giving visible results. The choice that shows this middle ground describes a practical, moderate count of passes, which is why it’s the best fit. The other items aren’t about passes at all: one relates to color mixing, another is a body organ, and the last is a measurement, none of which describe how many times the machine should pass over the skin.