Question

When you are picked with a pin, you will draw out your hand very fast. Here, what is the stimulus?

• A. Drawing out hand
• B. Pricking with a pin
• C. Pin
• D. Hand

Answer 1

The correct option is B

Pricking with a pin

The correct option is B.

Explanation of the correct option :

1. Something that causes a physiological response is known as a stimulus.
2. Sensitivity refers to an organism's or organ's ability to respond to external stimuli.
3. The stimulus is pricking with pins in the example above.
4. Reflex actions refer to both voluntary and involuntary responses to stimuli.

Final answer: When you are picked with a pin, you will draw out your hand very fast. Here, the stimulus is pricking with a pin.