Question

Response is the system's reaction to the stimulus true or false

Answer 1

That's right.

A stimulus is something that our senses can detect.

And a reaction could be how we respond to the stimulus,
or what happens to our bodies, because of the stimulus.

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Here's an example...

Stimulus: Heat
Reaction: Sweating

When our bodies detect heat, we sweat.

Sweat is the body's way of keeping itself cool.

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Here's another example:

Stimulus: The sound of a balloon, popping.
Reaction: Flinching

When we hear the sound of a balloon popping,
we flinch.

What that means is that we jump, or twitch, because for a quick moment, we are startled. Scared.