$8$

$3$ points

Which of the following are true regarding feedforward loops? Choose all correct answers.

They do not require that a variable has moved away from it's set point before responding.

They function to minimize how far a variable moves away from its set point.

They require an "end point" to stop them from acting continuously.

They are always long$-$distance control mechanisms $-$ they are never local.

The secretion of stomach acid in response to food entering the stomach is an example of this.

They require that a variable has moved away from it's set point before responding.