Achievement of desired relative positions of the articulators can be achieved with a system that is metaphorically described by a pulley with weights on either side, corresponding, say, to the upper and lower lip. What this metaphor is referring to is a neural network that relies on

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This metaphor refers to a neural network system where both the upper and lower lips are controlled by their respective controllers (A and B), and there is a bilabial closure unit that not only activates these controllers but also allows them to inhibit each other (C), thus ensuring coordinated movement for tasks such as speech. This comprehensive control mechanism is represented by all the options (A, B, and C) working together.

Achievement of Desired Relative Positions of the Articulators Can Be