Question

any change in environment to which an organisum response is called
2 points
stimulus
effector
nerves
muscles​

Answer 1

$\huge \underline\textbf{AnsWer}$

Stimulus option [A]

$\huge \underline\textbf{ExplaNation}$

A change in an organism's surroundings that causes the organism to react is called a stimulus (plural stimuli).

The cold is the stimulus while the shivering is the response.

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Answer 2

Answer:

A change in an organism's surroundings that causes the organism to react is called a stimulus (plural stimuli). An organism reacts to a stimulus with a response- an action or change in behavior.

Explanation:

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