142. In a closed-loop process control system, what is meant by the proportional mode of control?

It is a control mode that produces a control action that is proportional to the accumulation of error over time.
It is a control mode that produces a control action that is proportional to the error.
It is a control mode that produces a control action that is proportional to the gain.
It is a control mode that produces a control action that is proportional to the rate at which the error is changing.

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